Lunar Craters Langrenus and Petavius
The history of the Moon is partly written in its craters. Pictured here is a lunar panorama taken […]
Astronomy
A Mercury Transit Sequence
Tomorrow — Monday — Mercury will cross the face of the Sun, as seen from Earth. Called a […]
Saturn the Giant
On May 25, 1961 U.S. president John Kennedy announced the goal of landing astronauts on the Moon by […]
Messier 45: The Daughters of Atlas and Pleione
Hurtling through a cosmic dust cloud a mere 400 light-years away, the lovely Pleiades or Seven Sisters open […]
21st Century M101
One of the last entries in Charles Messier’s famous catalog, big, beautiful spiral galaxy M101 is definitely not […]
Spiral Galaxies Spinning Super Fast
Why are these galaxies spinning so fast? If you estimated each spiral‘s mass by how much light it […]
Near the Center of the Lagoon Nebula
Stars are battling gas and dust in the Lagoon Nebula but the photographers are winning. Also known as […]
Daphnis and the Rings of Saturn
What’s happening to the rings of Saturn? A little moon making big waves. The moon is 8-kilometer Daphnis […]
Inside the Flame Nebula
The Flame Nebula stands out in this optical image of the dusty, crowded star forming regions toward Orion’s […]
M42: Inside the Orion Nebula
The Great Nebula in Orion, an immense, nearby starbirth region, is probably the most famous of all astronomical […]