The 13th day of the 18th annual Space Telescope Advent Calendar features part of a dense cluster of galaxies—a wide variety ...

James Webb finds a hot planet that is tidally locked with its parent star, is coated with a thick atmosphere of volatile ...

The NASA/ESA/CSA James Webb Space Telescope has captured an amazing view of the iconic Hubble Ultra Deep Field using its MIRI ...

Researchers employing the James Webb Space Telescope and Canada's NIRISS instrument have observed exoplanet WASP-121b getting ...

Every week, Space.com delivers the latest discoveries, launches, and cosmic curiosities from across the universe. From ...

Located 12 billion light years away, the Alaknanda galaxy looks strikingly like the Milky Way. Its orderly spiral structure ...

The 2026 program, with its mix of historic commemorations, is expected to draw interest from regular collectors and new ...

A rocky exoplanet outside the Earth's solar system may have an atmosphere, according to new evidence gathered by NASA ...

Two icons of discovery, NASA's James Webb Space Telescope and NASA's Curiosity rover, have earned places in TIME's "Best Inventions Hall of Fame ...

The U.S. Postal Service today announced the Priority Mail and Priority Mail Express stamps it will release in 2026. There ...

The telescope captured near-infrared light from one of the earliest stars seen to explode in the history of the universe.

NASA Solar Dynamics Observatory (SDO) captured an enormous coronal hole the sun. Credit: NASA / SDO and the AIA, EVE, and HMI ...