Defending Against Radiation
The sun is a major source of radiation for life on Earth. Image credit: NASA/ESA/SOHO. Click to enlarge Space travel…
Hazy Layers on Titan
Titan's multiple hazy layers. Image credit: NASA/JPL/SSI Click to enlarge This is a composite photograph consisting of 24 photos taken…
Is Dark Matter Made up of Sterile Neutrinos?
The Guitar nebula. Image credit: Palomar Observatory. Click to enlarge Since it makes up a large part of the Universe,…
Debris Filled Craters on Mars
This photograph was taken by ESA's Mars Express spacecraft. It shows a mountain in the eastern Hellas Planitia region with…
Astrophoto: The Planet Jupiter by Mike Salway
The Planet Jupiter by Mike Salway Thirty years ago the clearest views of the planet Jupiter could only be obtained…
Book Review: Universe
Big topics need big books. You can't get a much bigger topic than the universe, and the book edited by…
What’s Up This Week – March 20 – March 26, 2006
M44: The Beehive. Image credit: NOAO/AURA/NSF. Click to enlarge. Greetings, fellow SkyWatchers! This week brings darker skies, bright star clusters,…
Maybe Water Didn’t Make the Gullies on Mars
Mars gullies in Noachis Terra region. Image credit: NASA Click to enlarge It was only a few years that researchers…
Watch Out for Moonquakes
Buzz Aldrin deploys a seismometer at the moon surface. Image credit: NASA Click to enlarge During the Apollo Moon missions…
A River of Stars Streaming Across the Sky
Artist's illustration of the northern starry river. Image credit: Caltech Click to enlarge Astronomers have found a narrow stream of…