Astrobiology Dispatches

Dispatches · Latest in Astrobiology · 24 Aug 2026

Ocean Worlds: Why Europa and Enceladus Rank Above Mars

For decades Mars was the default answer to where else we might find life. Two ice moons now have a stronger case.

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Astrobiology

Astrobiology09 Aug 20261 min read

The Biosignature Problem: When a Detection Is Not Proof of Life

Finding a gas linked to biology in an exoplanet's atmosphere is not the same as finding life. Here is why false positives are the field's hardest problem.

Astrobiology27 Jun 20261 min read

What Earth's Extremophiles Teach Us About Life Elsewhere

Before searching other worlds for life, astrobiologists study the most hostile corners of this one, and keep finding the limits further out than expected.

Astrobiology dispatches

Ocean Worlds: Why Europa and Enceladus Rank Above Mars

Astrobiology

The Biosignature Problem: When a Detection Is Not Proof of Life

What Earth's Extremophiles Teach Us About Life Elsewhere