A giant star in the Canis Majoris constellation isn't acting like itself, and scientists are doing their best to figure out why.
Speaking to Congress, two astronomers from SETI describe the chances of finding aliens as almost 100 percent.
Scientists pull a needle out of a haystack and identify a star that dates back to shortly after the Big Bang.
The SpaceView program will reach out to amateur astronomers in an effort to protect satellites from space junk orbiting the Earth.
For nearly 50 years, Palomar Observatory's Hale Telescope, near San Diego, was the most important device of its kind in the world. Even now, it's still used 290 nights a year. CNET Road Trip 2012 stopped by to check it out.
Pundits square off over whether the social network has the chops to deliver revenue from its massive user base to support its valuation.
Rushing tightly around a tiny star, this as-yet unnamed planet seems to be so dense that astronomers believe it is made of carbon and therefore is "a massive diamond".
If you're looking forward to seeing Perseids this week, you might want a refresher course of mapping the sky. These sites will get you ready for any cosmic event.
Astronomers around the world are aiming telescopes at Jupiter to study an Earth-size scar in the planet's atmosphere caused by a presumed comet or asteroid impact.
Experts have deciphered the word "Olympia" on the Antikythera Mechanism and discovered that one of its dials kept track of the four-year Olympics cycle.