NASA’s rehearsal for Artemis II marks one of the final steps before four astronauts get launched into deep space for the first time since the Apollo program ended.

Ahead of the anticipated launch of the Artemis II mission, catch a glimpse of February’s full moon, called the snow moon.

A 13-atom molecule containing sulfur has been discovered in interstellar space for the first time, providing insight into the origins of the chemistry of life.

The new Doomsday Clock time has been set by the Bulletin of the Atomic Scientists. Here’s what it means.

The Swedish Royal Academy of Sciences has awarded the Crafoord Prize to climate scientist Veerabhadran Ramanathan. He discovered a powerful force of global warming.

Blue Origin is pausing flights aboard its suborbital space tourism rocket New Shepard in order to expedite development of a lunar lander for NASA’s Artemis program.

As the four-person crew of Artemis II prepares to launch on a historic mission around the moon as soon as February, some experts are worried about the Orion spacecraft’s heat shield.

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

Old satellites and other space junk fall toward Earth every day, and the shock waves they create could be used to track their ...