Named after a goddess of the dawn, the Thesan simulation of the first billion years helps explain how radiation shaped the early universe.

Among thousands of known exoplanets, MIT astronomers flag three that are actually stars.

The computer-vision technique behind these maps could help avoid contrail production, reducing aviation’s climate impact.

If wildfires become larger and more frequent, they might stall ozone recovery for years.

The planet’s night side likely hosts iron clouds, titanium rain, and winds that dwarf Earth’s jetstream.

Catalog of planet candidates nearly doubles in size during 2020-21.

A levitating vehicle might someday explore the moon, asteroids, and other airless planetary surfaces.

The discovery, based on an unusual event dubbed “the Cow,” may offer astronomers a new way to spot infant compact objects.

The boiling new world, which zips around its star at ultraclose range, is among the lightest exoplanets found to date.

A newly discovered “ultrahot Jupiter” has the shortest orbit of any known gas giant.