Two-Tone Moon
An up-close view of Iapetus reveals that the large moon of Saturn has a two-toned appearance. The white material is…
20-Year Odyssey
Mars Odyssey, shown in an artist's concept above the north pole of Mars, will mark 20 years in Mars orbit…
A Telescope Like No Other
This artist's concept depicts James Webb Space Telescope at work. Webb, which is scheduled for launch this fall, is the…
Magnet Hunter
IXPE (Imaging X-ray Polarimetry Explorer), shown scanning a nebula in this artist's concept, will use X-ray telescopes to look for…
Big Galaxy, Medium Black Hole
The barred-spiral galaxy NGC 3319 spins through Ursa Major, the Great Bear. It's about 47 million light-years from Earth, and…
Lucy in the Sky (with Asteroids)
Lucy, a mission scheduled for launch at 4:34 a.m. CDT October 16, streaks by an asteroid in this artist's concept.…
Cold Skies
A crescent Neptune shines above its largest moon, Triton, in this artist's concept. The illustration is based on images from…
Dusty Star
A bright ring of dust encircles the star Fomalhaut in this image from ALMA, an array of radio telescopes in…
Relics
This Hubble Space Telescope image shows Messier 15, an ancient star cluster in Pegasus. It contains some of the oldest…
Lining Up
The pyramid of Khufu, the largest of the pyramids of Giza, was built with the help of Thuban, a star…