Marcia Dunn | Associated Press

A billionaire spacewalker is back on Earth. SpaceX's capsule carrying tech entrepreneur Jared Isaacman and his crew splashed down in the Gulf of Mexico near Florida's Dry Tortugas early Sunday.

NASA's newest climate satellite has blasted off to survey the world's oceans and atmosphere in unprecedented detail.

NASA is publicly addressing the subject of UFOs a year after launching a study into unexplained sightings. And it insists it's not hiding anything.

Jeff Bezos' rocket company has won a NASA contract to land astronauts on the moon, two years after losing out to SpaceX. Blue Origin received a $3.4 billion contract to develop a lunar lander.

The Webb Space Telescope has captured the rare and fleeting phase of a star on the cusp of death.

A rocket made almost entirely of 3D parts is on the launch pad in Florida awaiting its debut launch.

NASA’s moon rocket is back on the pad at Cape Canaveral for another launch attempt, following more repairs. The Space Launch System rocket and Orion spacecraft for the Artemis I mission departed its Florida hangar in the middle of the night and completed the 4-mile trip shortly after sunrise Friday. NASA is aiming for a launch attempt in mid-November.

NASA says a spacecraft that plowed into a small, harmless asteroid millions of miles away last month succeeded in shifting its orbit. “This mission shows that NASA is trying to be ready for whatever the universe throws at us,” NASA Administrator Bill Nelson said Tuesday.

The Hubble and Webb space telescopes captured this week's asteroid strike, as NASA's Dart spacecraft slammed into the Dimorphos asteroid in the first planetary defense test of its kind. NASA on Thursday released pictures of the dramatic event.