A black hole can consume anything in its path. These monsters can become huge — but perhaps only so huge.

Saturn's rings might be more massive, and thus older, than researchers had believed.

Featured blog: John McCain weighs in on science and technology issues with long-awaited written responses to the Science Debate 2008.

The final mission to the Hubble Space Telescope, set for early October, could radically transform the observatory, but the crew faces some special challenges

From the August 30, 2008 issue of Science News

A Greek gadget discovered more than a century ago in a 2,100-year-old shipwreck not only tracked the motion of heavenly bodies and predicted eclipses, but also functioned as a sophisticated calendar and mapped the four-year cycle of the ancient Greek Olympics.

Astronomers have found big benefits from recruiting the public to lend their eyes and image-processing prowess