Galaxy Clusters Have Different Supernova Yields
Clusters of galaxies as seen by XMM-Newton. Image credit: ESA. Click to enlarge Galaxy clusters are the largest objects in…
Iapetus’ Darker Side
Saturn's moon Iapetus. Image credit: NASA/JPL/SSI. Click to enlarge This Cassini image shows the darker side of Saturn's moon Iapetus.…
Twin Supernovae in NGC 3190
Spiral galaxy NGC 3190. Image credit: ESO. Click to enlarge Supernovae are rare enough, but astronomers discovered two going off…
Comet is Bright With X-Rays
NASA's Swift captured this image of 73P/Schwassmann-Wachmann 3 as it bypassed the Ring Nebula. Image credit: NASA. Click to enlarge…
Biggest 3-D Map of the Universe
A schematic view of the new SDSS three-dimensional map. Image credit: Hogg/SDSS-II collaboration. Click to enlarge Astronomers from UC Berkeley…
What’s Up This Week – May 15 – May 21, 2006
M63: "The Sunflower Galaxy". Image credit: N.A. Sharp/NOAO/AURA/NSF. Click to enlarge Greetings, fellow SkyWatchers! It may be raining all over…
Astrophoto: The Large Magellanic Cloud by John Gleason
The Large Magellanic Cloud by John Gleason In August 1519, a Portuguese admiral with five tall ships and a crew…
Podcast: We’re Safe From Gamma Ray Bursts
Artist impression of a gamma ray burst exploding near the Earth. Image credit: NASA. Click to enlarge. We live in…
Podcast: We’re Safe From Gamma Ray Bursts
We live in a dangerous Universe. Our tiny home planet is at risk from many extraterrestrial threats: asteroid strikes, solar…
Titan and Epimetheus
Epimetheus and Titan against Saturn's rings. Image credit: NASA/JPL/SSI Click to enlarge This Cassini photograph shows Saturn's rings and two…