Cooling Neutron Star
The bright source near the center is a neutron star, the incredibly dense, collapsed remains of a massive […]
NASA
Cassini Looks Out from Saturn
This is what Saturn looks like from inside the rings. Last week, for the first time, NASA directed […]
Arches of Spring
Two luminous arches stretched across the dome of the sky on this northern spring night. After sunset on […]
Exploring the Antennae
Some 60 million light-years away in the southerly constellation Corvus, two large galaxies are colliding. Stars in the […]
Lyrids in Southern Skies
Earth’s annual Lyrid meteor shower peaked before dawn on April 22nd, as our fair planet plowed through dust […]
Mt. Etna Lava Plume
Mt. Etna has been erupting for hundreds of thousands of years. Located in Sicily, Italy, the volcano produces […]
A Split Ion Tail for Comet Lovejoy E4
What’s happened to Comet Lovejoy? In the pictured image, a processed composite, the comet was captured early this […]
The Holographic Principle
Is this picture worth a thousand words? According to the Holographic Principle, the most information you can get […]
NGC 4302 and NGC 4298
Seen edge-on, spiral galaxy NGC 4302 (left) lies about 55 million light-years away in the well-groomed constellation Coma […]
Asteroid 2014 JO25
A day before its closest approach, asteroid 2014 JO25 was imaged by radar with the 70-meter antenna of […]