Some of the most puzzling worlds in our telescopes’ catalogs may not be worlds at all, but relics from the first instants ...

Astronomers recently pointed NASA’s Hubble Space Telescope at a familiar target, the bright nearby star Fomalhaut, and saw something that looked like a new world. A compact, reflective speck glimmered ...

Seán Jordan does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...

Billions of years ago, Earth was an uninhabitable rock covered in magma. Scientists are still working to decipher the tale of how it transformed into a blue and green orb teeming with life. However, ...

New discoveries and fresh looks at familiar worlds show how far exoplanet science has come — and how much remains unknown.

Earth's seasons look very different at locations not far from each other, 20 years' worth of satellite data reveals. When you purchase through links on our site, we may earn an affiliate commission.

A satellite photo from July shows intricate snowy stripes painted across the Atacama Desert in Chile. The icy weather temporarily put the Atacama Large Millimeter/submillimeter Array (ALMA) ...

A sampling of aging Sun-like stars demonstrates that they likely eat their closest planets. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This ...

Astronomers spotted an object that looks like a planet, weighs about as much as Jupiter, and yet behaves like nothing anyone has seen before. This strange world sits dangerously close to a dead star.

Interstellar comet 3I/ATLAS made its closest approach to Earth on Friday, Dec. 19. The comet will pass within about 170 million miles of our planet and poses no danger. While not visible to the naked ...