Earth twin Archives

Earth’s planetary spectra through time as seen with the LUVOIR concept mission (LUVOIR Team, 2019). Credit: G. Arney, S. Domagal-Goldman, T. B. Griswold (NASA GSFC) -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Origin & Evolution of Life, Press Release

Exo-Geoscience Perspectives Beyond Habitability

by Keith CowingJanuary 9, 2026January 9, 2026

This article reviews the emerging field of exo-geoscience, focusing on the geological and geophysical processes thought to influence the evolution and (eu)habitability of rocky exoplanets.

This artist’s illustration shows HD 86728 b, the very first exoplanet to be discovered by the NEID spectrograph, mounted on the WIYN 3.5-meter Telescope at the U.S. National Science Foundation Kitt Peak National Observatory, a Program of NSF NOIRLab. Exoplanet HD 86728 b is about nine times more massive than Earth. Surprisingly, this super-Earth appears to be the only planet orbiting its star. Credit: NOIRLab/NSF/AURA/P. Marenfeld

Astronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release

NEID Earth Twin Survey Delivers On Its Goal to Push the Limits of Exoplanet Discovery

by Keith CowingNovember 23, 2024

For four years the NEID (rhymes with fluid) spectrograph, mounted on the WIYN 3.5-meter Telescope at U.S. National Science Foundation Kitt Peak National Observatory (KPNO), a Program of NSF NOIRLab, […]