Stepping Out
Astronaut Ed White makes the first American spacewalk as he floats outside his Gemini 4 spacecraft on June 3, 1965.…
Astronaut Ed White makes the first American spacewalk as he floats outside his Gemini 4 spacecraft on June 3, 1965.…
X-ray energy forms expanding rings around the black hole V404 Cygni in this series of images from the Swift X-ray…
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This artist’s concept depicts two moons orbiting a Jupiter-like planet in another solar system, as seen from the surface of…
Saturn’s icy moon Enceladus (background) slides behind Dione in this series of images shot by the Cassini spacecraft on September…
A deep ocean may lie far below the icy crust of Ganymede, the largest moon of Jupiter. In this image,…
The Moon will pass through Earth’s long shadow on the night of September 27, creating a total lunar eclipse, such…
Venus and Jupiter, the brightest objects in the night sky other than the Moon, are staging a spectacular encounter in…
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A Hubble Space Telescope image shows NGC 7662, the Blue Snowball Nebula, which is the final act of a dying…
A giant storm swirls all the way around Saturn in this 2010 view from the Cassini spacecraft. Such storms have…
The crescent Moon will slip past several bright stars and planets in the early morning hours on October 8 and…