Date   

Hi all two interesting research papers here to read

Edwin Rod
 

The future of Earth and also a look at Proxima C




Re: Make sure to watch Jupiter and Saturn this month

wayne roberts
 

They are already very close; as you say, great views to come. My eyesight is not what it was and stars/planets present as elongated spikes (distance glasses clean it up nicely) - I doubt I'll be able to separate them at their closest (without my glasses). Telescopic views will be magic Emoji.
Regards;
Wayne.

On Wednesday, 2 December 2020, 07:26:47 am AEDT, Edwin Rod via groups.io <edwinrod_welly@...> wrote:


Going to be great to watch over the next month



Make sure to watch Jupiter and Saturn this month

Edwin Rod
 

Going to be great to watch over the next month



November 2020 News and Research

Edwin Rod
 

Hi everyone

Please find all the usual star chart’s and newsletters attached along with a few interesting bits of research.

There is a good look at the search for the proposed outer ice giant this month and some great ones looking at habitable planets too.  The Leo labs tool looking at orbiting objects is lots of fun to have a look at.

 

Cheers Edwin

 




Research papers


Hydrogen recombination line luminosities and -variability from forming planets
https://arxiv.org/abs/2002.09918

An Integrated Analysis with Predictions on the Architecture of the tau Ceti Planetary System
https://arxiv.org/abs/2010.14675

Hydrogen dominated atmospheres on terrestrial mass planets
https://arxiv.org/abs/2010.15091

A Targeted Shift-Stacking Search for Planet Nine and Distant TNOs in the Galactic Plane
https://arxiv.org/abs/2010.13791

The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data
https://arxiv.org/abs/2010.14812

Volume-Complete Sample of Mid-to-Late M dwarfs within 15 Parsecs
https://arxiv.org/abs/2010.15635

Water abundance at the surface of C-complex main-belt asteroids
https://arxiv.org/abs/2011.00279

Stellar occultations enable milliarcsecond astrometry for Trans-Neptunian objects and Centaurs
https://arxiv.org/abs/2010.12708

Modelling the atmosphere of lava planet K2-141b
https://arxiv.org/abs/2010.14101

SPECULOOS Ultracool Dwarf Transit Survey
https://arxiv.org/abs/2011.02069

Statistical Properties of Superflares on Solar-type Stars
https://arxiv.org/abs/2011.02117

Generalized Stoichiometry and Biogeochemistry for Astrobiological Applications
https://arxiv.org/abs/2011.02425

Clouds in Exoplanetary Atmospheres
https://arxiv.org/abs/2011.03302

The Effect of Land Albedo on the Climate of Land-Dominated Planets in the TRAPPIST-1 System
https://arxiv.org/abs/2011.03621

The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data
https://arxiv.org/abs/2010.14812

The Demographics of Exoplanets
https://arxiv.org/abs/2011.04703

Re-analysis of Phosphine in Venus' Clouds
https://arxiv.org/abs/2011.08176

Observability of ultraviolet N I lines in the atmosphere of transiting Earth-like planets
https://arxiv.org/abs/2011.05613

Evidence for geologically recent explosive volcanism in Elysium Planitia, Mars
https://arxiv.org/abs/2011.05956

Terraforming the dwarf planet Ceres
https://arxiv.org/abs/2011.07487

The Ultimately Large Telescope
https://arxiv.org/abs/2007.02946

Kernel Phase and Coronagraphy with Automatic Differentiation
https://arxiv.org/abs/2011.09780

Presumptuous Philosopher Proves Panspermia
https://philpapers.org/rec/TURPPP-8

A terrestrial-mass rogue planet candidate detected in the shortest-timescale microlensing event
https://arxiv.org/abs/2009.12377

Hubble WFC3 Spectroscopy of the Habitable-zone Super-Earth LHS 1140 b
https://arxiv.org/abs/2011.08815

Brightness modulations of our nearest terrestrial planet Venus reveal atmospheric super-rotation rather than surface features
https://arxiv.org/abs/2011.09271

New Horizons Observations of the Cosmic Optical Background
https://arxiv.org/abs/2011.03052

Methane as a dominant absorber in the habitable-zone sub-Neptune K2-18 b
https://arxiv.org/abs/2011.10424

----------------------------------------------------------------------
Interesting News items

FORTHCOMING STAR PARTIES -


CENTRAL STAR PARTY. Thu 14th – Mon 18th January 2021. Four days/nights of tenting/bunk rooms, excellent astronomy talks and
telescope viewing! Tuki Tuki Camp site, 70 Moore Rd, Haumoana, Hawkes Bay. www.censtar.party .

STARDATE – SOUTH ISLAND. Waitangi weekend, Fri 5th -Mon 8th February 2021. Staveley. Keep an eye on https://cas.org.nz/

STARDATE. Fri 12 and Sat 13 February 2021, at Stonehenge. Phoenix Astronomical Society. Contact secretary@...



Astronomers find 139 new minor planets in the outer solar system
https://astronomy.com/news/2020/03/astronomers-find-139-new-minor-planets-in-the-outer-solar-system

NASA's Webb To Examine Objects in the Graveyard of the Solar System
http://spaceref.com/asteroids/nasas-webb-to-examine-objects-in-the-graveyard-of-the-solar-system.html

Why sleep experts say it’s time to ditch daylight saving time
https://theconversation.com/why-sleep-experts-say-its-time-to-ditch-daylight-saving-time-146956

How giant planets turn gas to metal
http://nccr-planets.ch/blog/2020/10/30/how-giant-planets-turn-gas-to-metal


Americans searching 'how to move to NZ' skyrockets during a tight election race
https://www.nzherald.co.nz/world/americans-searching-how-to-move-to-nz-skyrockets-during-a-tight-election-race/5OOOWEGQFBOMMBP3ZZPKXO3XJU/

Why is Australia chock-full of poisonous creatures
https://www.kickassfacts.com/askus-why-is-australia-full-of-poisonous-creatures-but-not-new-zealand/

On 300 Million Habitable Zone Planets
https://www.centauri-dreams.org/2020/11/10/on-300-million-habitable-zone-planets/

One of my favorite area's
https://getpocket.com/explore/item/searching-for-the-key-to-life-s-beginnings

Radioactive Elements May Be Crucial To The Habitability Of Rocky Planets
http://astrobiology.com/2020/11/radioactive-elements-may-be-crucial-to-the-habitability-of-rocky-planets.html

NSF begins planning for decommissioning of Arecibo Observatory’s 305-meter telescope due to safety concerns
https://www.nsf.gov/news/news_summ.jsp?cntn_id=301674

Low Earth Orbit Visualization
https://platform.leolabs.space/visualization



A collection of nice scopes here

Edwin Rod
 

Hi all

It was a great weekend away in Foxton at the NZ Astrophotography weekend. There was no shortage of telescopes to check out and admire.
It was a nice clear night Saturday night and I managed to do some observing and also take some photos. You always ed up leaving with a big shopping list of things to buy :)

Cheers Edwin



New Zealand Astrophotography Weekend 2020
http://www.horoastronomy.org.nz/upcoming-events/astrophotography-weekend

Nikon CoolPix P900
CMOS Sensor
14_11_2020
Target - Subject
Telescopes, Sunset, and the event.
Location
Foxton Beach
https://en.wikipedia.org/wiki/Foxton_Beach
https://www.google.co.nz/maps/@-40.4668783,175.2473649,941m/data=!3m1!1e3
Lens
Nikkor 83X Wide Optical Zoom
File Name
Foxton_Astrocamp_P900_14_11_2020




The Southern Cross and pointers

Edwin Rod
 

The Southern Cross and pointers

One here for people to enjoy from the northern hemisphere, there were some street lights in this direction, and the cabin I was in for the night can be seen too.

 

New Zealand Astrophotography Weekend 2020

http://www.horoastronomy.org.nz/upcoming-events/astrophotography-weekend

 

Nikon CoolPix P900

CMOS Sensor

14_11_2020

Target - Subject

Telescopes, Sunset, and the event.

Location

Foxton Beach

https://en.wikipedia.org/wiki/Foxton_Beach

https://www.google.co.nz/maps/@-40.4668783,175.2473649,941m/data=!3m1!1e3

Lens

Nikkor 83X Wide Optical Zoom

File Name

Foxton_Astrocamp_P900_14_11_2020




A night under the stars

Edwin Rod
 

A night under the stars

It was good to give the 650D a workout and snap this one of everyone with their gear and hard at work under the stars, my DSLR is now over 8 years old too!

 

New Zealand Astrophotography Weekend 2020

http://www.horoastronomy.org.nz/upcoming-events/astrophotography-weekend

 

Nikon CoolPix P900

CMOS Sensor

14_11_2020

Target - Subject

Telescopes, Sunset, and the event.

Location

Foxton Beach

https://en.wikipedia.org/wiki/Foxton_Beach

https://www.google.co.nz/maps/@-40.4668783,175.2473649,941m/data=!3m1!1e3

Lens

Nikkor 83X Wide Optical Zoom

File Name

Foxton_Astrocamp_P900_14_11_2020




Water on Sunlit Surface of Moon

Edwin Rod
 

Hi Everyone

Important news requires an important update. Attached are two interesting papers about the Moon and water on the surface to have a look at. The observations were made from SOFIA which often operates from Christchurch.

The NASA news item is also linked below, now when we will make it back?

Super interesting so I will let you all read on.

Cheers Edwin






Cheers Edwin



Ch



October 2020 News research and Star Charts

Edwin Rod
 

Hi everyone

Please find this month’s news, starcharts and as always a few of this month’s best research items.

 

You will be pleased to know the satellite Collison didn’t happen it sure was a nice day so I went out and took a few photos, and I have attached one taken around 2pm at the predicted time of re entery over wellington. There are two really interesting articles to read on the subject. The story behind Donald J. Kessler was very interesting and something I had never read about before.

Again Andrew has a range of interesting updates for us too including looking at Bennu and the sample collection a mission I know he’s been following closely.

If your looking for a full update on the Venus news I have managed over the last month to collect up all the bits of research on the phosphine discovery but top of the list are suggestions that the measurement was an error. Either way a new mission back to Venus is needed to study the clouds and map the surface in detail.

Remember it’s the Astrophotography camp in November and I’m hoping to make it along for one night.

Thanks Edwin




Research papers


Which Stars can see Earth as a Transiting Exoplanet
https://arxiv.org/abs/2010.09766

Coupled Day-Night Models of Exoplanetary Atmospheres
https://arxiv.org/abs/2010.07303

In Search for a Planet Better than Earth superhabitable worlds
https://www.liebertpub.com/doi/10.1089/ast.2019.2161

Solid tidal friction in multi-layer planets
https://arxiv.org/abs/2010.04587

Hot Exoplanet Atmospheres WASP-121 b
https://arxiv.org/abs/2006.11308

a targeted SETI strategy that avoids the SETI Paradox
https://arxiv.org/abs/2010.04089

Temperature Evolution and Habitability Impacts of Dozens of Superflares Observed Simultaneously by Evryscope and TESS
https://arxiv.org/abs/2010.00604

Status of the SPARC Physics Basis
https://www.cambridge.org/core/journals/journal-of-plasma-physics/collections/status-of-the-sparc-physics-basis

Moderate-Resolution K-Band Spectroscopy of Substellar Companion ? Andromedae b
https://arxiv.org/abs/2009.08959

Earth as an Exoplanet
https://arxiv.org/abs/2010.02589

Gravitational wave lensing beyond general relativity
https://arxiv.org/abs/2009.12187

Refining the transit timing and photometric analysis of TRAPPIST-1
https://arxiv.org/abs/2010.01074

Multiple subglacial water bodies below the south pole of Mars unveiled by new MARSIS data
https://arxiv.org/abs/2010.00870

The CARMENES search for exoplanets around M dwarfs.
https://arxiv.org/abs/2010.00474

A terrestrial-mass rogue planet candidate detected in the shortest-timescale microlensing event
https://arxiv.org/abs/2009.12377

Effects of the Planar Galactic Tides and Stellar Mass on Comet Cloud Dynamics
https://arxiv.org/abs/0911.5533

Lunar Opportunities for SETI
https://arxiv.org/abs/2009.12689

Primordial Black Holes as Dark Matter
https://arxiv.org/abs/2006.02838

Electrostatic lofting of dust grains from the surfaces of Thebe and Amalthea
https://arxiv.org/abs/2009.11114

Rapidly Spinning Compact Stars with Deconfinement Phase Transition
https://arxiv.org/abs/2009.10731




Venus

Venus No statistically significant detection of phosphine
https://arxiv.org/abs/2010.09761

A stringent upper limit of the PH3 abundance at the cloud top of Venus
https://arxiv.org/abs/2010.07817

Phosphine on Venus Cannot be Explained by Conventional Processes
https://arxiv.org/abs/2009.06499

A Precursor Balloon Mission for Venusian Astrobiology
https://arxiv.org/abs/2009.11826

Might active volcanisms today contribute to the presence of phosphine in Venus's atmosphere?
https://arxiv.org/abs/2009.11904

On The Biomass Required To Produce Phosphine Detected In The Cloud Decks Of Venus

Authors: Manasvi Lingam, Abraham Loeb
https://arxiv.org/abs/2009.07835

Feasibility Analysis and Preliminary Design of ChipSat Entry for In-situ Investigation of the Atmosphere of Venus
https://arxiv.org/abs/2009.08396

Transfer of Life Between Earth and Venus with Planet-Grazing Asteroids
https://arxiv.org/abs/2009.09512

Phosphine as a Biosignature Gas in Exoplanet Atmospheres
https://www.liebertpub.com/doi/full/10.1089/ast.2018.1954

Looking for pieces of Venus? Try the moon
https://www.eurekalert.org/pub_releases/2020-10/yu-lfp100720.php

Detection of simplest amino acid glycine in the atmosphere of the Venus
https://arxiv.org/abs/2010.06211


----------------------------------------------------------------------
Interesting News items

FORTHCOMING STAR PARTIES -
STARDATE MARS. Fri 16 to Sun 18 October 2020. Phoenix Astronomical Society. Talks and telescope viewing at Stonehenge Aotearoa
(near Carterton) – with a focus on Mars! Contact The Phoenix Astronomical Society secretary - secretary@... .

NZ ASTROPHOTOGRAPHY WEEKEND. Fri 13th – Sun 15th November 2020. Shed new light on your astrophotography with some
of New Zealand’s top astrophotographers! Foxton Beach Camp, Foxton Beach, Horowhenua. www.nzapw.org.nz .

CENTRAL STAR PARTY. Thu 14th – Mon 18th January 2021. Four days/nights of tenting/bunk rooms, excellent astronomy talks and
telescope viewing! Tuki Tuki Camp site, 70 Moore Rd, Haumoana, Hawkes Bay. www.censtar.party .

STARDATE – SOUTH ISLAND. Waitangi weekend, Fri 5th -Mon 8th February 2021. Staveley. Keep an eye on https://cas.org.nz/

STARDATE. Fri 12 and Sat 13 February 2021, at Stonehenge. Phoenix Astronomical Society. Contact secretary@...




Earth-like Planets often come with a bodyguard
http://www.mpia.de/news/science/2020-16-superearth


The current state of space debris
https://www.esa.int/Safety_Security/Space_Debris/The_current_state_of_space_debris

The Elusive Peril of Space Junk
https://www.newyorker.com/magazine/2020/09/28/the-elusive-peril-of-space-junk


Tasmanian devils return to mainland Australia for first time in 3,000 years
https://www.nationalgeographic.com/animals/2020/10/tasmanian-devils-return-to-mainland-australia/

How America Lost 200,000 Lives to Covid-19
https://www.nytimes.com/2020/09/29/opinion/covid-pandemic-us-response.html

2020 New Zealand Astrophotography Competition Entry movie
https://www.youtube.com/watch?v=h_8PNrPiqpM

Where in the world will the next epidemic start?
https://sciblogs.co.nz/guestwork/2020/09/27/where-in-the-world-will-the-next-epidemic-start/


Meet the bright people behind the Wairarapa dark sky reserve bid
https://www.stuff.co.nz/dominion-post/news/wairarapa/300109429/meet-the-bright-people-behind-the-wairarapa-dark-sky-reserve-bid

Daylight savings
https://www.rnz.co.nz/news/national/426993/spring-forward-five-facts-about-daylight-saving





Possible inter-satellite collision on Friday (2PM NZ Time)

Edwin Rod
 

Hi Folks

Twitter seems to be down, but to the best of my knowledge this is going to be 2pm today!

Links and info below

Cheers Edwin







We likely won't know anything about the possible satellite collision tonight until the Chinese CZ-4C booster passes over New Zealand. That's 5000 km or roughly 11 minutes after the (possible) impact, say 9:07 PM EDT. Maybe we'll hear something by 9:10 or so.





Inline image





Beauty in the Stars – Steve C

Edwin Rod
 

Beauty in the Stars – Steve C

I have known Steve for many years and he sure is one amazing photographer of deep sky objects. In fact the images looking amazing on the projector in the darkened room, I feel people will be looking forward to exploring the Magellanic clouds with his images in the near future.

Post Covid Lockdown it was nice to see Steve in person too.

WAS Meeting, Space Place – Carter Observatory

Samsung A8+

07_10_2020




September 2020 News and research items

Edwin Rod
 

 
Hi everyone

Please find all the usual, starcharts and newsletters attached along with some research papers too. With the news about Phosphine in the clouds of Venus I have added in some good ones on Venus for you to have a look at and read. Again Andrew has provide us with some great updates and there are lots of links to have a look at. Due to not feeling to well over the weekend I haven’t been able to do much of a write up on Venus myself this month but Paul Gilsters article provides a great overview and detail as always.

Anyway enjoy

Thanks Edwin


Research papers


On The Biomass Required To Produce Phosphine Detected In The Cloud Decks Of Venus

Authors: Manasvi Lingam, Abraham Loeb
https://arxiv.org/abs/2009.07835

Feasibility Analysis and Preliminary Design of ChipSat Entry for In-situ Investigation of the Atmosphere of Venus
https://arxiv.org/abs/2009.08396

Transfer of Life Between Earth and Venus with Planet-Grazing Asteroids
https://arxiv.org/abs/2009.09512



Seeing above the Clouds with High Resolution Spectroscopy
https://arxiv.org/abs/2008.11464

Estimating the Ultraviolet Emission of M dwarfs with Exoplanets from Ca II and Ha
https://arxiv.org/abs/2009.07869

Water Vapor and Clouds on the Habitable-Zone Sub-Neptune Exoplanet K2-18b
https://arxiv.org/abs/1909.04642

Callisto
https://arxiv.org/abs/2009.05002

Accretion disk's magnetic field controlled the composition of the terrestrial planets
https://arxiv.org/abs/2009.04311

Stellar Flares versus Luminosity XUV-induced Atmospheric Escape and Planetary Habitability
https://arxiv.org/abs/2009.04310

A kilometer-scale asteroid inside Venus's orbit
https://arxiv.org/abs/2009.04125

Direct characterization of young giant exoplanets at high spectral resolution by coupling SPHERE and CRIRES
https://arxiv.org/abs/2009.01841


How massive can a black hole be? This study asked that question and takes a look at how many there could be.

Black holes – Do they grow stupendously large?
https://astrobites.org/2020/09/05/stupendously-large-black-holes/

Constraints on Stupendously Large Black Holes
https://arxiv.org/abs/2008.08077


Direct Imaging Discovery of a Young Brown Dwarf Companion to an A2V Star
https://arxiv.org/abs/2009.08537

The High-Energy Radiation Environment Around a 10 Gyr M Dwarf
https://arxiv.org/abs/2009.01259

Utilizing a Database of Simulated Geometric Albedo Spectra for Photometric Characterization of Rocky Exoplanet Atmospheres
https://arxiv.org/abs/2009.01330

Cryogenic Cometary Sample Return
https://arxiv.org/abs/2009.00101

Habitable Zones in Binary Star Systems
https://arxiv.org/abs/2009.00144

The Equatorial Jet Speed on Tidally Locked Planets
https://arxiv.org/abs/2009.00358

A Recipe for Geophysical Exploration of Enceladus
https://arxiv.org/abs/2008.02887

The effects of granulation and supergranulation on Earth-mass planet detectability
https://arxiv.org/abs/2008.11952

Lithologic Controls on Silicate Weathering Regimes of Temperate Planets
https://arxiv.org/abs/2008.11620

Evolution of the Earth's Polar Outflow From Mid-Archean to Present
https://arxiv.org/abs/2008.10337

The impact of the planetesimal surface density in the terrestrial planet zone
https://arxiv.org/abs/2008.10432


Alien skies
https://www.drewexmachina.com/2020/08/28/alien-skies-the-view-from-alpha-centauri/


----------------------------------------------------------------------
Interesting News items


The British Astronomical Association (BAA) did a webinar about Comet NEOWISE a few days ago. It can be seen on YouTube at -

https://www.youtube.com/watch?v=G6xlpvxJTYQ



Camera retailer who swindled more than $100,000 from customers jailed
https://www.stuff.co.nz/timaru-herald/news/122804586/camera-retailer-who-swindled-more-than-100000-from-customers-jailed


Gobekli Tepe: The world’s first astronomical observatory?
https://astronomy.com/news/2020/09/gobekli-tepe-the-worlds-first-astronomical-observatory


Dark sky reserve moving forward
https://times-age.co.nz/dark-sky-reserve-moving-forward

Dark Sky Maps
https://blue-marble.de/nightlights/2019

New Zealand Tasmanian tiger pelt provides DNA of extinct marsupial
https://www.rnz.co.nz/news/national/424807/new-zealand-tasmanian-tiger-pelt-provides-dna-of-extinct-marsupial


A Supercomputer Analyzed Covid-19 — and an Interesting New Theory Has Emerged
https://elemental.medium.com/a-supercomputer-analyzed-covid-19-and-an-interesting-new-theory-has-emerged-31cb8eba9d63

A mechanistic model and therapeutic interventions for COVID-19 involving a RAS-mediated bradykinin storm
https://elifesciences.org/articles/59177

Intensive Care Unit Admission and Mortality Among Patients Hospitalized for COVID-19
https://www.sciencedirect.com/science/article/pii/S0960076020302764



August 2020 News skycharts and research papers

Edwin Rod
 

Hi everyone

 

Please find all the usual newsletters, starcharts and papers attached.

Its Covid level level 2 for us in Wellington and NZ until Sunday night (29th Aug) and its level 3 for the Auckland region, I have one or two links on Covid for those who might be interesting, in the attached notepad file.

There sure is no shortage of interesting articles this month and a lot to get through. Did the Sun form with another star? A binary companion? Interesting research suggests it might have, with intriguing implications for the proposed outer ice giant Planet. Ganymede has always been a Moon of interest for me and this month there is a look at a big impact basin on the moon and the tidal heating of Jupiter’s Moons.  There is also an interesting look at a Star that is just big enough to be on the main sequence. How many habitable planets can you fit around a Star? Its an interesting question that is answered this month. There is a look at a very high density Neptune planet and a look at the Trappist planets too.

 

Andrew from the UK has also summed up nicely some top stories from the month too.

 

Cheers Edwin

 

 

Research papers


Surface and oceanic habitability of Trappist-1 planets under the impact of flares
https://arxiv.org/abs/2008.09147

Magma ocean evolution of the TRAPPIST-1 planets
https://arxiv.org/abs/2008.09599

Potential For Liquid Water Biochemistry Deep Under The Surfaces Of The Moon, Mars And Beyond
https://arxiv.org/abs/2008.08709

Isotopically distinct terrestrial planets via local accretion
https://arxiv.org/abs/2008.08850

High-resolution survey for planetary companions to young stars in the Taurus Molecular Cloud
https://arxiv.org/abs/2008.06065

Quantifying the information impact of future searches for exoplanetary biosignatures
https://arxiv.org/abs/2008.07586

Detection of ten new planets
https://arxiv.org/abs/2008.07998

Missions to and Sample Returns from Nearby Interstellar Objects
https://arxiv.org/abs/2008.07647

An eclipsing M-dwarf close to the hydrogen burning limit from NGTS
https://arxiv.org/abs/2008.07354

Powering the Galilean Satellites with Moon-Moon Tides
https://arxiv.org/abs/2008.02825

The Science Case for a Titan Flagship-class Orbiter with Probes
https://arxiv.org/abs/2008.05680

Optical Transmission Spectroscopy of the Terrestrial Exoplanet LHS 3844b
https://arxiv.org/abs/2008.05444

Effects of Flux Variation on the Surface Temperatures of Earth-like Circumbinary Planets
https://arxiv.org/abs/2008.04992

Could the Migration of Jupiter have Accelerated the Atmospheric Evolution of Venus
https://arxiv.org/abs/2008.04927

Differing Enceladean ocean circulation and ice shell geometries driven by tidal heating
https://arxiv.org/abs/2008.03764

Non-detection of O2/O3 informs frequency of Earth-like planets with LUVOIR but not HabEx
https://arxiv.org/abs/2008.03952

Water worlds in N-body simulations with fragmentation in systems without gaseous giants
https://arxiv.org/abs/2008.03594

Monte Carlo estimation of the probability of causal contacts between communicating civilisations
https://arxiv.org/abs/2007.03597

A Long-Lived Sharp Disruption on the Lower Clouds of Venus
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020GL087221

The Habitable-zone Planet Finder Reveals A High Mass and a Low Obliquity for the Young Neptune K2-25b
https://arxiv.org/abs/2007.12766

https://www.centauri-dreams.org/2020/08/07/a-dense-sub-neptune-challenges-formation-theories/

An astrometric planetary companion candidate to the M9 Dwarf TVLM 513-46546
https://arxiv.org/abs/2008.01595

https://www.centauri-dreams.org/2020/08/05/saturn-class-exoplanet-is-a-win-for-astrometry/
http://spaceref.com/extrasolar-planets/radio-telescopes-find-extrasolar-planet-around-main-sequence-star.html


The Habitability of the Galactic Bulge
https://arxiv.org/abs/2008.01419

Stellar Pulsation and the Production of Dust and Molecules in Galactic Carbon Stars
https://arxiv.org/abs/1910.11401

Prebiotic precursors of the primordial RNA world in space
https://arxiv.org/abs/2008.00228

Exoplanets Sciences with Nulling Interferometers and a Single-Mode Fiber-Fed Spectrograph
https://arxiv.org/abs/2007.15529

Asteroid impact, Schumann resonances and the end of dinosaurs
https://arxiv.org/abs/2007.15463

Observing Earth from the Moon to prepare for detecting life on Earth-like exoplanets
https://arxiv.org/abs/2007.16078

Dynamical Packing in the Habitable Zone
https://arxiv.org/abs/2006.13962

The stability of tightly-packed, evenly-spaced systems of Earth-mass planets orbiting a Sun-like star
https://arxiv.org/abs/1703.08426

https://www.centauri-dreams.org/2020/08/04/a-tight-fit-planets-in-the-habitable-zone/

Oceanic and atmospheric methane cycling in the cGENIE Earth system model
https://arxiv.org/abs/2007.15053

Colors of an Earth-like exoplanet
https://arxiv.org/abs/2007.15624

investigating the biological potential of galactic cosmic ray-induced radiation-driven chemical disequilibrium in the Martian subsurface
https://www.nature.com/articles/s41598-020-68715-7

Near-parabolic comets observed in 2006-2010
https://arxiv.org/abs/1308.0563

No evidence for interstellar planetesimals trapped in the Solar System
https://arxiv.org/abs/2006.04534

The Science Case for Spacecraft Exploration of the Uranian Satellites
https://arxiv.org/abs/2007.07284

Can Volcanism Build Hydrogen-Rich Early Atmospheres
https://arxiv.org/abs/2007.12037



Using a real-world network to model localized COVID-19 control strategies
https://www.nature.com/articles/s41591-020-1036-8


Deforestation and world population sustainability: a quantitative analysis
https://www.nature.com/articles/s41598-020-63657-6

https://www.vice.com/en_us/article/akzn5a/theoretical-physicists-say-90-chance-of-societal-collapse-within-several-decades


----------------------------------------------------------------------
Interesting News items


New Zealand Astrophotography Weekend 2020
http://www.horoastronomy.org.nz/upcoming-events/astrophotography-weekend


'Shallow Lightning' and 'Mushballs' Reveal Ammonia to NASA's Juno Scientists
https://www.jpl.nasa.gov/news/news.php?feature=7721


Vincent Van Gogh’s art comes alive and larger than life on Wellington waterfront
https://www.stuff.co.nz/entertainment/122282691/vincent-van-goghs-art-comes-alive-and-larger-than-life-on-wellington-waterfront

The People’s Space Odyssey: 2010: The Year We Make Contact
https://www.centauri-dreams.org/2020/07/31/the-peoples-space-odyssey-2010-the-year-we-make-contact/


The scramble for space at Earth’s outer limits
https://www.rnz.co.nz/news/world/423083/the-scramble-for-space-at-earth-s-outer-limits

The Unraveling of America   
https://www.rollingstone.com/politics/political-commentary/covid-19-end-of-american-era-wade-davis-1038206






Vincent Van Gogh’s art comes alive and larger than life on Wellington waterfront

Edwin Rod
 


July 2020 Starcharts News and research

Edwin Rod
 

Hi Everyone

 

Please find this month’s newsletters and starcharts attached  

Another month with life here in New Zealand returning to normal post lockdown.

However things around the world and close to home in Melbourne/Victoria the situation isn’t looking good.

https://www.rnz.co.nz/news/world/421996/record-rise-in-world-s-covid-19-cases

 

There has been another interesting month of research and news to read, a special thanks to Andrew in the UK for his updates on most of the months top interesting news items I’ve included them in usual attachment. There is an interesting look at rocks in Australia and how this can help research similar rock types on Mars this would be an interesting place to do geology. There is also a look at Tides on Titan another look at Europa. As always if you’re interested in exo planets there are a few to read too.

It sure has been a busy month.

Cheers Edwin





Research papers


Relaying Swarms of Low-Mass Interstellar Probes
https://arxiv.org/abs/2007.11554

Effect of Sea-ice Drift on the Onset of Snowball Climate on Rapidly Rotating Aqua-planets
https://arxiv.org/abs/2007.11179

Regional study of Europa's photometry
https://arxiv.org/abs/2007.11445

A playable package for modeling interstellar chemistry
https://arxiv.org/abs/2007.11294

Estimating survival probability using the terrestrial extinction history for the search for extraterrestrial life
https://arxiv.org/abs/2007.09904

Ancient Australian Rocks and the Search for Life on Mars
https://arxiv.org/abs/2007.06656

A pole-to-equator ocean overturning circulation on Enceladus
https://arxiv.org/abs/2007.06173

The role of clouds on the depletion of methane and water dominance
https://arxiv.org/abs/2007.06562

Predicting the long-term stability of compact multiplanet systems
https://arxiv.org/abs/2007.06521

Habitability Models for Planetary Sciences
https://arxiv.org/abs/2007.05491

Water transport throughout the TRAPPIST-1 system
https://arxiv.org/abs/2007.05366

The Dynamic Proto-atmospheres around Low-Mass Planets with Eccentric Orbits
https://arxiv.org/abs/2007.04398

Atmospheric Erosion by Giant Impacts onto Terrestrial Planets A Scaling Law
https://arxiv.org/abs/2007.04321

Unexpected Circular Radio Objects at High Galactic Latitude
https://arxiv.org/abs/2006.14805

A review of possible planetary atmospheres in the TRAPPIST-1 system
https://arxiv.org/abs/2007.03334

Terrestrial Planets Comparative Climatology (TPCC) mission concept
https://arxiv.org/abs/2007.03049

Worlds without Moons Exomoon Constraints for Compact Planetary Systems
https://iopscience.iop.org/article/10.3847/2041-8213/aa6bf2

Human Assisted Science at Venus Venus Exploration in the New Human Spaceflight Age
https://arxiv.org/abs/2006.04900

Tidal Currents Detected in Kraken Mare Straits from Cassini VIMS Sun Glitter Observations
https://arxiv.org/abs/2007.00804

The Venus Life Equation
https://arxiv.org/abs/2007.00105

planetary atmospheres and their link to the stellar environment
https://arxiv.org/abs/2006.16650

Dyson Spheres
https://arxiv.org/abs/2006.16734

JWST Transit Spectra for Cloudy Exoplanets
https://arxiv.org/abs/2007.00109

Ocean Worlds Exploration and the Search for Life
https://arxiv.org/abs/2006.15803




----------------------------------------------------------------------
Interesting News items






Native South Americans were early inhabitants of Polynesia
https://www.nature.com/articles/d41586-020-01983-5

Did ancient Americans settle in Polynesia? The evidence doesn’t stack up
https://theconversation.com/did-ancient-americans-settle-in-polynesia-the-evidence-doesnt-stack-up-142383

Wai-iti stargazing site receives international Dark Sky Park recognition
https://www.stuff.co.nz/travel/back-your-backyard/122070233/waiiti-stargazing-site-receives-international-dark-sky-park-recognition

Oumuamua
https://spaceq.ca/oumuamua-the-mysterious-visitor-to-our-solar-system/

Venus
https://www.jpl.nasa.gov/news/news.php?feature=7689



This months starcharts along with the News and research

Edwin Rod
 

Hi everyone

Another busy month, some interesting ones on seti this month, along with neptune sized planets. There is also a detailed look at Europa too.


Research papers




Risks for Life on Proxima b from Sterilizing Asteroid Impacts
https://arxiv.org/abs/2006.12503

The Breakthrough Listen Exotica Catalog
https://arxiv.org/abs/2006.11304

An eccentric Neptune-mass planet near the inner edge of the BD-11 4672 habitable zone
https://arxiv.org/abs/2006.14393

Spin-orbit alignment of the ß Pictoris planetary system
https://arxiv.org/abs/2006.10784

A Mini-Neptune and a Venus-Zone Planet in the Radius Valley Orbiting the Nearby M2-dwarf TOI-1266
https://arxiv.org/abs/2006.11180

Inferring the population properties of binary black holesfrom unresolved gravitational waves
https://arxiv.org/abs/2004.09700

Retrieving scattering clouds and disequilibrium chemistry in the atmosphere of HR 8799e
https://arxiv.org/abs/2006.09394

Neptune-Size Exoplanet HD 106315 c
https://arxiv.org/abs/2006.07444

The Astrobiological Copernican Weak and Strong Limits for Extraterrestrial Intelligent Life
https://arxiv.org/abs/2004.03968

Lessons learned from (and since) the Voyager 2 flybys of Uranus and Neptune
https://arxiv.org/abs/2006.08340

Planet formation and Volatile Delivery
https://arxiv.org/abs/2006.07127

Astrochemistry During the Formation of Stars
https://arxiv.org/abs/2006.07071

transit candidate in the habitable zone of Kepler-160
https://arxiv.org/abs/2006.02123

Photometrically-corrected global infrared mosaics of Enceladus
https://arxiv.org/abs/2006.00146

The Effect of Substellar Continent Size on Ocean Dynamics of Proxima Centauri b
https://arxiv.org/abs/2005.14185

Implications of different stellar spectra for the climate of tidally-locked Earth-like exoplanets
https://arxiv.org/abs/2005.13002

Atmospheric Escape From TOI-700 d Venus vs Earth Analogs
https://arxiv.org/abs/2005.13190

Aquatic Biospheres On Temperate Planets Around Sun-like Stars And M-dwarfs
https://arxiv.org/abs/2005.14387

Qualitative classification of extraterrestrial civilizations
https://arxiv.org/abs/2005.13221

A Long-lived Sharp Disruption on the Lower Clouds of Venus
https://arxiv.org/abs/2005.13540

Possible Interstellar meteoroids detected by the Canadian Meteor Orbit Radar
https://arxiv.org/abs/2005.10896

Evidence that 1I/2017 U1 (`Oumuamua) was composed of molecular hydrogen ice
https://arxiv.org/abs/2005.12932

https://www.wired.com/story/oumuamua-might-be-a-giant-interstellar-hydrogen-iceberg/

Revisiting Proxima with ESPRESSO
https://arxiv.org/abs/2005.12114v1

High mantle seismic P-wave speeds as a signature for gravitational spreading of superplumes
https://advances.sciencemag.org/content/6/22/eaba7118/tab-pdf
https://www.stuff.co.nz/science/300022439/new-zealand-sits-on-top-of-the-remains-of-a-giant-ancient-volcanic-plume

Exomoon habitability constrained by illumination and tidal heating
https://arxiv.org/abs/1209.5323

On-sky verification of Fast and Furious focal-plane wavefrontsensing
https://arxiv.org/abs/2005.12097


----------------------------------------------------------------------
Interesting News items

Super Earths
http://spaceref.com/exoplanets/super-earths-discovered-orbiting-nearby-red-dwarf-gliese-887.html

Nabta Playa
https://astronomy.com/news/2020/06/nabta-playa-the-worlds-first-astronomical-site-was-built-in-africa-and-is-older-than-stonehenge

LIfe in the Galaxy
http://astrobiology.com/2020/06/life-in-the-galaxy-is-this-as-good-as-it-gets.html

Interesting look at the night sky
https://telescopius.com


Why astronomers now doubt there is an undiscovered 9th planet in our solar system
https://theconversation.com/why-astronomers-now-doubt-there-is-an-undiscovered-9th-planet-in-our-solar-system-127598


Official Attempt for Measuring light pollution

Hi Everyone, RASNZ and the Dark Sky Section of RASNZ in NZ have this awesome project where we can measure light pollution.
On Sunday, even if the sky is covered. Hope you can make it. Every one of us can make the difference. Thank you

Hari

On Sunday 21 June 2020, On the darkest day of the year.... join us to measure light pollution even if it's raining.
Have you heard about light pollution?
Don't like that light shining in your bedroom window? Want to do something about it?
Join us to preserve the night by being part of a Guinness World Records ™ Official Attempt for Measuring light pollution!

https://worldrecordlight.thinkific.com/pages/coming_soon



Official Attempt for Measuring light pollution

Edwin Rod
 

Official Attempt for Measuring light pollution

Hi Everyone, RASNZ and the Dark Sky Section of RASNZ in NZ have this awesome project where we can measure light pollution.
On Sunday, even if the sky is covered. Hope you can make it. Every one of us can make the difference. Thank you

Hari

On Sunday 21 June 2020, On the darkest day of the year.... join us to measure light pollution even if it's raining.
Have you heard about light pollution?
Don't like that light shining in your bedroom window? Want to do something about it?
Join us to preserve the night by being part of a Guinness World Records ™ Official Attempt for Measuring light pollution!











This is very interesting reading on the proposed Planet 9

Edwin Rod
 


May 2020 News skycharts and research papers

Edwin Rod
 

Hi everyone

 

Another busy month and here in New Zealand things seem to be getting back to life as normal and were looking at moving down to level 1 next month.

Lots of interesting research this month, from a looking at the outer solar system small objects to research on the proposed “Planet 9”. Again there is some interesting ones looking at exo planets and solar system dynamics.

Anyway I’ll leave you all to read the ones that interest you most

Cheers Edwin




Research papers



Tidal evolution of exoplanetary systems hosting Potentially Habitable Exoplanets
https://arxiv.org/abs/2005.10318

The Effect of Seafloor Weathering on Planetary Habitability
https://arxiv.org/abs/2005.09092

The large Trans-Neptunian Object 2002 TC302
https://arxiv.org/abs/2005.08881

instantaneous incoherent speckle grid for high-precision astrometry and photometry
https://arxiv.org/abs/2005.08751

Stellar Variability in a Forming Massive Star Cluster
https://arxiv.org/abs/2005.08198

The Discovery of the Long-Period, Eccentric Planet Kepler-88 d
https://arxiv.org/abs/1909.02427

Constraining the final merger of contact binary(486958) Arrokoth
https://arxiv.org/abs/2005.06525

Two examples of how to use observations of terrestrial planets
https://arxiv.org/abs/2005.06512

Earths in Other Solar Systems N-body simulations
https://arxiv.org/abs/2005.04233

World ships Feasibility and Rationale
https://arxiv.org/abs/2005.04100

Further constraining the Planet Nine hypothesis with numerical simulations
https://arxiv.org/abs/2005.05326

Dark Energy Survey's extreme trans-Neptunian objects
https://arxiv.org/abs/2003.08901

The Brute-Force Search for Planet Nine
https://arxiv.org/abs/2004.14980

Biosignature Surveys to Exoplanet Yields and Beyond
https://arxiv.org/abs/2005.04005

Snow-lines can be thermally unstable
https://arxiv.org/abs/2005.03665

Wide band, tunable gamma-ray lenses
https://arxiv.org/abs/2005.03894

The occurrence rate of exoplanets orbiting ultracool dwarfs as probed by K2
https://arxiv.org/abs/2005.01440

Testing Earth-like atmospheric evolution on exo-Earths
https://arxiv.org/abs/2005.01587

Laboratory studies on the viability of life in H2-dominated exoplanet atmospheres
https://arxiv.org/abs/2005.01668

Thermodynamic and Energetic Limits on Continental Silicate Weathering
https://arxiv.org/abs/2004.14058

Switching LPS to LED Streetlight May Dramatically Reduce Activity and Foraging of Bats
https://www.mdpi.com/1424-2818/12/4/165

Dynamical effects on the habitable zone for Earth-like exomoons
https://academic.oup.com/mnras/article/432/4/2994/1001104

constraints-on-the-habitability-of-extrasolar-moons
https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/constraints-on-the-habitability-of-extrasolar-moons/09A95F86FB2CEBD7074F52FD45EF7B96


----------------------------------------------------------------------
Interesting News items


On Inspiration, Astrobiology, and the Origins of Life in the Universe: An Interview with Haritina Mogosanu
https://www.buzzsprout.com/678467/3721901

Dock at the ISS
https://iss-sim.spacex.com/

An Alternative to Planet 9: Maybe There Is Nothing Special
https://aasnova.org/2020/05/05/an-alternative-to-planet-9-maybe-there-is-nothing-special/


Zealandia
https://www.rnz.co.nz/national/programmes/ourchangingworld/audio/2018745356/probing-the-hidden-continent-of-zealandia

Zealandia: Earth’s Hidden Continent
https://www.geosociety.org/gsatoday/archive/27/3/article/GSATG321A.1.htm




Strangest of All Anthology of Astrobiological SF

Edwin Rod
 

Hi All

This Sci Fi E-book caught my attention today and looks very interesting


IntroductionJulie NovákováIs anyone out there?This is an age-old question we are yet to answer.Speculation on alien life is nothing new. The Greekatomists considered the plurality of worlds and “otherearths inhabited by different tribes of men and breeds ofbeasts”1; 16th century Italian priest and occultist GiordanoBruno speculated about “infinite multitude of worlds”2; thefamous philosopher Immanuel Kant wrote in his Critique ofPure Reason that he would bet everything that at least someof the known planets were inhabited.Nor is science fiction working with the idea of lifeelsewhere or not quite as-we-know-it anything new. One ofthe first such works was penned by the great JohannesKepler himself and published posthumously. The novelSomnium tells a story of a boy, who’d studied astronomywith Tycho Brahe, and the boy’s witch mother, who hadlearned from a demon that the Moon (“Levania”) isinhabited. They both undertake the shocking journey to visitit, and there is an abundance of description of both thecreatures of the Moon and – in this case quite accurately, inaccord with science of that time – the Earth seen from there.The 17th and 18th century saw an increase of stories oflife elsewhere in space, and after the birth of modern science




Cheers Edwin