In one was a cloud in a bottle, for which high school demonstrators ignited alcohol fumes, followed by a fiery flash burst ...

"They can penetrate metal on satellites, hit circuit boards, and can be carcinogenic if they hit a person in space." ...

From the discovery of gravity to the first mission to defend Earth from an asteroid, here are the most important physics ...

Prior to the new research, scientists had traced the source of just 6 percent of the known meteorites that fell on our planet ...

The annual event normally lasts from about Oct. 16 to 26 with some appearing as early as the start of October.

NASA has just launched a mission to Jupiter's icy moon Europa. A NASA scientist answers kid's questions about the mission and its goals.