All four RS-25 engines were structurally mated to the core stage for NASA's Space Launch System (SLS) rocket for Artemis I, the first mission of SLS and NASA's Orion spacecraft.
While the moon's surface is battered by millions of craters, it also has over 200 holes - steep-walled pits that in some cases might lead to caves that future astronauts could explore and use for shelter, according to new observations from NASA's Lunar Reconnaissance Orbiter (LRO) spacecraft.
The shadow of NASA InSight's robotic arm moves over its heat probe, or "mole," on Nov. 3, 2019, the 333rd Martian day, or sol, of the mission.
An updated visual orbit of the directly-imaged exoplanet 51 Eridani b and prospects for a dynamical mass measurement with Gaia
A critical milestone for commercial crew, resupply spacecraft delivers to the space station, and a new wide-eyed view of the southern sky ... a few of the stories to tell you about - This Week at NASA.
The Sun's glint beams off Lake Michigan in this southward view taken from the International Space Station orbiting 253 miles above Canada just north of Lake Superior.
