Crowded Skies
The western evening sky features several bright stars and planets in late May. This view, on May 22, is roughly…
Last Visit
Saturn’s moon Dione stands in front of Saturn and its rings in this August 17 view from the Cassini spacecraft.…
Busy Neighbor
A planet (right) orbits close to Alpha Centauri B, the second-largest star of the triple Alpha Centauri system, in this…
Young Giant
A young Jupiter-like planet orbits far from its star in this artist's concept. McDonald Observatory astronomers are looking for similar…
Stepping Out
Astronaut Ed White makes the first American spacewalk as he floats outside his Gemini 4 spacecraft on June 3, 1965.…
Big Gulp Aftermath
X-ray energy forms expanding rings around the black hole V404 Cygni in this series of images from the Swift X-ray…
Worlds of Worlds
This artist’s concept depicts two moons orbiting a Jupiter-like planet in another solar system, as seen from the surface of…
Two-Fer
Saturn’s icy moon Enceladus (background) slides behind Dione in this series of images shot by the Cassini spacecraft on September…
Hiding an Ocean
A deep ocean may lie far below the icy crust of Ganymede, the largest moon of Jupiter. In this image,…
Lunar Eclipse
The Moon will pass through Earth’s long shadow on the night of September 27, creating a total lunar eclipse, such…