Taxonomy term

extraterrestrial life

Obliquity and eccentricity determine exoplanet habitability

Finding habitable Earth-like planets may be even more challenging than previously thought, suggests a recent Astronomical Journal study looking at how the planetary obliquity, or tilt relative to an orbital axis, and orbital eccentricity affect the habitability of planets orbiting G-dwarf stars — which are similar to the sun.

05 Sep 2018

Comment: Could NASA find evidence of extraterrestrial life by 2050?

Two upcoming missions will provide the first systematic approach to searching the atmospheres of exoplanets for signs of life — and they could find it in the next several decades.

04 Jun 2018

Geologic Column: Lessons from the final frontier

Somewhere, out there, beyond the stars Arcturus and Pollux, the TV signals from the final season of the original “Star Trek” are radiating outward. The series has been a teaching tool for a generation, and the programs offer multiple lessons for earth scientists.

03 Feb 2012