In the #Anthropocene we are overstepping #PlanetaryBoundaries, which puts strain on the whole #Earth system and its ability to maintain #Habitability. What might be the consequences if such a out of balance system gets impacted by a #NuclearWar and the following #NuclearWinter? I try to understand the implications in this new post on #ExistentialCrunch: https://existentialcrunch.substack.com/p/anthropocene-under-dark-skies-the

As this post is also a conference paper, I would highly appreciate feedback!

#Terminator #Habitability: The Case for Limited Water Availability on M-dwarf #Planets: https://iopscience.iop.org/article/10.3847/1538-4357/aca970 -> ‘Terminator zones’ on distant planets could harbor life, UC Irvine astronomers say: https://news.uci.edu/2023/03/16/terminator-zones-on-distant-planets-could-harbor-life-uc-irvine-astronomers-say/

Three #planets.

One with a high surface #habitability and biodiversity that gave rise to a technological civilisation.

The others are a hot rocky world with runaway greenhouse effect and a cool gaseous giant #planet.

#astronomy

Oxygenic photosynthetic responses of #cyanobacteria exposed under an M dwarf #starlight simulator.

Cyanobacteria were shown to grow and photosynthesize similarly under M dwarf and solar light conditions.

This implies that cyanobacteria, the foundations of photosynthetic #life on Earth, could function and flourish under M dwarf surface conditions considering starlight.

#astrobiology #exoplanets #habitability
https://arxiv.org/abs/2302.09396

Tonight's the night! Join us at twitch.tv/open_science at 10:30 PM EST to learn about #exoplanets and potential habitability from Kiersten Boley of #OhioState!

#STEM #scicomm #openscience #space #habitability #Science #ScienceMastodon #streaming #Twitch #education #solar

Open Science Presentations is finally back! Join @KierstenBoley this Friday at 10:30 PM EST to learn about her work on exoplanets! Learn the whats, wheres, and whys of exoplanets, including...#habitability!
http://twitch.tv/open_science
#astromastodon #space #openscience #STEM #scicomm #outerspace #science #ScienceMastodon #streaming #research #seminar

Rocky #planets orbiting M-dwarf stars are among the most promising astronomical targets for detecting #habitable climates.

But they are also synchronously rotating eith significant day-night temperature differences, and potentially limited fractional #habitability.

However, for water-limited planets it is possible to have scorching temperatures in the "eye" and freezing temperatures on the nightside, while maintaining a temperate #climate in the terminator region.

https://arxiv.org/abs/2212.06185

A side piece of one of my more fun projects: releasing a browse-able, translated and plain language version of the Massachusetts rules for habitable housing: https://code.getuptocode.org/#/es/. AFAICT this is the first such website. In past you'd need to link to a giant PDF.

The linked website is still in progress, but excited to see it ready soon! And yes, we'll be updated to the new #SanitaryCode in April.

#housing #Massachusetts #TenantsRights #habitability #a2j #AccessToJustice

Earth is about 29% land and 71% oceans. How significant is that mix for #habitability? What does it tell us about #exoplanet habitability?

Multiple factors contribute to our #planet's overall habitability: abundant liquid water, plate tectonics, bulk composition, proximity to the Sun, the magnetosphere, etc.

But what about a planet's ratio of oceans to land?

#exoplanets #astrobiology #astronomy https://www.sciencealert.com/study-attempts-to-unravel-the-best-ratio-of-land-to-ocean-for-exoplanet-habitability

Paper by Höning & Spohn (2022): https://arxiv.org/abs/2211.09473

Construction on the world’s biggest eye on the sky, ESO’s Extremely Large Telescope (#ELT) continues at the summit of Cerro Armazones in the Chilean Atacama Desert.

This gargantuan instrument will enable direct detections of #exoplanets around the nearest stars to the Sun, enabling the study of their atmospheric compositions and prospects for #habitability.

#astronomy https://www.eso.org/public/images/potw2248a/

Matt Williams - Mars Could Have Been Wet for Much Longer Than Previously Believed:

https://www.universetoday.com/154383/mars-could-have-been-wet-for-much-longer-than-previously-believed/#more-154383

#Mars #Water #WaterOnMars #Rain #SellersExoplanetEnvironmentsCollaboration #SEEC #NoachianPeriod #HesperianPeriod #KaseiValles #LifeOnMars #Habitability #Glaciers #Ocean #ROCKE3D #GlobalClimateModel #GCM #Climate #PlanetaryScience #Astronomy