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habitability

This tag is associated with 36 posts

Origin of water in the solar system is interstellar

Water is essential for life, but where does it come from? Read on and learn that a significant amount is inherited from the interstellar medium.

Habitability Whether Rocks Weather or Not?

Habitable zone estimations take the climate regulation of the carbon cycle into account. But are we drawing the edges of the habitable zone too wide?

Habitability Still a Go on Tidally Locked Terrestrial Exoplanets

Yang et al. use climate models to investigate whether rocky exoplanets around M-stars can retain their oceans in the face of tidal locking.

Gamma Ray Bursts vs. All Life on Earth

Asteroids and volcanoes are familiar harbingers of global doom. But what about Gamma Ray Bursts? Is another doomsday lurking?

How giant planets affect accretion of water by rocky planets

How do giant planets affect the water content of rocky planets in habitable zones? Astronomers have run new planet formation simulations to try to answer this question.

How Green Can a Planet in a Resonant Orbit Be?

Planets orbiting close to type-M dwarf stars are in the habitable zone, but if their orbits are in a 3:2 spin resonance, do their long, strange days and nights have a chance of supporting photosynthetic life?

Planets Get Heat With A Little Help From Their Friends

For planets too old for plate tectonics, a companion planet could drive tidal heating to keep conditions primed for life.

Better Than Earth: Superhabitable Worlds

Title: Superhabitable Worlds Authors: René Heller and John Armstrong First Author’s Institution: McMaster University Status: Published in Astrobiology Note: This journal article covers two topics that we thought each deserved its own astrobite. Yesterday’s astrobite discussed the first half of the paper, about the effects of tidal heating on habitability. Today’s astrobite explores the concept […]

How to Keep Warm Outside the Habitable Zone

Today’s paper is too awesome to be contained in merely one astrobite, so we’ve split it into two parts. In Part 1, find out how you can keep warm even if you’re far outside your star’s habitable zone (if “you” are a planet or moon, that is). Tune in tomorrow for Part 2: Superhabitability and You!

Unifying Planetary Atmospheres

A new model explains the common 0.1 bar temperature minimum in certain types of planetary atmospheres.

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