Exoplanets

The next year of science for the James Webb Space Telescope has been selected. It includes remote galaxy observations and, at last, a hunt for exomoons

New observations from the James Webb Space Telescope are exposing the pathways that water takes to reach terrestrial planets

We’re looking for another Earth. But how likely is it that we’ll find a duplicate of home?

Information theory can help us decode signs of biological activity hiding in the atmospheres of distant exoplanets

No one has ever seen a newborn star feeding on its natal disk anywhere outside our galaxy—that is, until now

Astronomers are moving ahead in planning NASA’s Habitable Worlds Observatory, a telescope designed to answer the ultimate question: Are we alone in the universe?

Six “sub-Neptune” worlds locked in a delicate dance around a nearby star offer fresh insights for the orbital evolution of planetary systems

Money, engineering and sheer geometry may mark an end of the line for building ever larger astronomical telescopes

A planet-vaporizing impact is the leading explanation for a distant star’s curiously fluctuating light

Astronomers have found high-altitude clouds formed from quartz crystals on the gas-giant world WASP-17b

The James Webb Space Telescope’s infrared gaze sheds new light on the Orion nebula, an icon of the night sky

Thirty years ago, astronomer Carl Sagan convinced NASA to turn a passing space probe’s instruments on Earth to look for life — with results that still reverberate today