The U.S. Air Force will unveil the new Northrop Grumman-built B-21 Raider stealth bomber today (Dec. 2), an aircraft that has been called "the most advanced military aircraft ever built."

Luckily, the launch abort system wasn't needed during the Artemis 1 launch to the moon. But the view its departure left behind looks just like a moment from 'Interstellar' or 'Star Wars'.

NASA's Tom Marshburn visited the International Space Station three times with three different spacecraft, accruing nearly a year in space over his career.

UFOs are making headlines again, but lost in the hype and ruckus is the question of when this all started and how we got to this point.

A new video shows how a team of NASA and European Space Agency spacecraft plan to relay Martian rock samples to Earth.

The aircraft-borne SOFIA telescope could not find signs of a compound possibly linked to biological activity during observations of Venus' atmosphere.

The full moon will appear in very close proximity to a brilliant Mars in the evening of Wednesday (Dec. 7) as the Red Planet reaches opposition.

Less than two weeks after a bright fireball lit up the sky above the Great Lakes, another spectacular meteor impressed skywatchers in the Northeast.

20th Century Studios releases the final trailer for "Avatar: The Way of Water"

Andrew Fazekas, a.k.a. The Night Sky Guy, shared the story of the stunning new "Stargazer's Atlas" from Nat Geo.

Epic Games' Fortnite Chapter 3 finale event destroyed the battle royale game's island battleground on Saturday (Dec. 3), then launched players into space to build a new one.