Planetary Science | Astronomy.com

Biosphere 2’s latest mission: Learning how life first emerged on Earth – and how to make barren worlds habitable

Organic molecules in Saturn’s rings originated from liquid water, scientists confirm

Was Mercury formed by a cosmic hit-and-run?

The search for alien life may depend on plate tectonics

NASA study finds Ceres may have once been habitable

5 modern revolutions in planetary science

Did Earth once have a ring?

Stellar jet pressures planet-forming disk

Vote now: What are your top five revolutions in planetary science?

NASA personnel warn of ‘dire’ consequences of proposed cuts

The biggest piece of Mars on Earth is up for auction

A man in a suit and tie, identified by a nameplate reading "Mr. Isaacman," speaks into a microphone during a formal hearing or panel. Several people sit behind him.

Science, Space Exploration

Trump withdraws nomination of Jared Isaacman to lead NASA