exoplanet astronomy Archives - Astrobiology

A decision tree strategy for characterizing Earth-like exoplanets (Young et al. 2024). This tree indicates which gasses to observe, and in which order, to detect the biosignatures of Earth through time and rule out relevant false positives. The blue path was followed in spectral retrievals of Young et al. (2024) to categorize modern Earth, and the orange path for Archean Earth. Reproduced with permission from Young et al. (2024).-- astro-ph.IM

Astronomy & Telescopes, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, NASA Astrobiology Program, Status Report

Habitable Worlds Observatory (HWO): Living Worlds Community Working Group: The Search for Life on Potentially Habitable Exoplanets

by Keith CowingJanuary 16, 2026January 16, 2026

The discovery of a biosphere on another planet would transform how we view ourselves, and our planet Earth, in relation to the rest of the cosmos.