Bigger Risks from Smaller Asteroids?
When astronomers first made the connection between asteroid impacts and extinction events on Earth, it was kind of frightening. There…
Day of Troubleshooting Leads to Clues for Shuttle and ISS
Tuesday, December 18 was a day of major troubleshooting for NASA, as the space agency tries to hunt down the…
Astrosphere for December 18, 2007
Your astrophoto of the day is another image of Comet Holmes, captured by John Chumack. The Astronomical Society of the…
Mysterious Explosion Comes Out of Nowhere
When astronomers find a gamma ray burst, they can usually locate the culprit's home galaxy. But in the case of…
Mars at its Closest Approach
Okay, now you can tell your friends and family that Mars is making its closest approach, and not August like…
Enceladus: Cold Moon With a Hot Spot
Saturn's tiny moon Enceladus is a cold and icy place. But somehow, there's enough heat being generated on Enceladus' south…
Galactic Black Hole Fires a Jet at a Nearby Neighbour
Ouch, that's going to leave a mark. A new photograph captured by NASA's Chandra X-Ray Observatory shows a powerful jet…
Best Space and Astronomy Books for 2007
Universe Today's resident book reviewer, Mark Mortimer, recalls his favourite space and astronomy books of 2007. Books inflame the imagination…
Podcast: Building a Career in Astronomy
With all the enthusiasm that's being generated with astronomy, it's had a bit of a strange side-effect. We've been causing…
What’s Up this Week: December 17 – December 23, 2007
Monday, December 17 - Tonight there are craters galore to explore: Plato, Aristotle, Eudoxus, Archimedes... But let's head to the…