Everything’s on the Menu for Supermassive Black Holes
The supermassive black holes that lurk at the heart of most galaxies have enormous appetites. They've already consumed millions of…
The Clearest Skies on Earth
Telescopes are perched at the tops of mountains because the air up there is thinner, drier and clearer than the…
Astrophoto: M83 by Michael Sidonio
Scientists have known the universe is expanding for over eight decades. During this period, many speculated that gravity would eventually…
Phoenix Lander is Coming Together
NASA's next mission to the surface of the Red Planet is the Phoenix Mars Lander, due for launch in August…
Dione Passes in Front of Rhea
This photograph, captured by NASA's Cassini spacecraft, shows Saturn's moon Dione crossing the face of Rhea. Dione is on the…
Fizzing Space Around the Earth
New observations from ESA's Cluster and Double Star spacecraft have found that that space around the Earth fizzes as bubbles…
NASA Announces STS-120 Crew
NASA has announced the crew of astronauts that will fly the space shuttle for mission STS-120. This mission will launch…
Distant Quasars are Natural Particle Accelerators
An international team of astronomers has gathered new data that helps to explain the origins of quasar particle jets. These…
Mars Reconnaissance Orbiter Continues to Lower its Orbit
NASA's newest visitor to the Red Planet, the Mars Reconnaissance Orbiter, is still in the process of shrinking its orbit,…
Airship Observatories Could Give the Best View
When it comes to astronomy, large telescopes rule. But if you can get your instrument into space, you bypass the…