Tag Archives: planets

What if Earth is a Really Atypical Abode for Life?

Recent space missions have raised some interesting ideas about exobiology for me. The Galileo and Cassini results on Europa and Enceladus, respectively have revealed evidence for liquid water oceans under their surface ice, providing a remarkably clement environment for life … Continue reading

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Pluto’s Place in the Solar System

When New Horizons​ launched, its mission in the public imagination was to complete the set of the nine planets. No doubt this helped the mission get funded, and I respect that. By the time it arrived, though, we had accumulated … Continue reading

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What might it mean if Pluto is geologically active?

This week, we saw this on Pluto: This surface has no yet-identified impact craters in it. Instead, there are very tall mountains of unknown geology, some weird puffy deposits near the limb, obscuring underlying geology, a rille I cannot explain, … Continue reading

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