Astronomers have found a star rich in zirconium, the material used to make a substitute for diamonds. The star is called LS IV-14 116. It is 2,000 light years from Earth.
Astronomers think they've discovered why a galaxy's spiral arms wind up tightly around the galaxy's core as the system rotates. Read more on spiral galaxies.
As 2011 opens, flooding in Queensland is forcing people to leave their homes. Police are wading through chest-deep floodwaters in suburbs, telling people to leave.
In 2007, just months before his death, computer scientist Randy Pausch delivered the lecture of a lifetime at Carnegie Mellon University. His talk has become more popularly known as The Last Lecture.
You can measure the sun with a ruler, tape measure and a small mirror. Yes, the actual size of the sun! You'll need a little math, but it's a great school project.