Without having been trained to do so, chimps in a Japanese study helped their fellow apes access elusive juice. The researchers say this adds to evidence that chimps are more similar to humans than previously thought. Video

Solar particles bounced back into space by the lunar surface are giving scientists new insight into how the sun affects the moon, a new study says.

The annual Orionids meteor shower, caused by debris from Halley's comet, should put on a "decent show" this year as meteors streak across a moonless sky, astronomers say.

A huge fireball streaked over several Dutch towns on Tuesday before it broke apart, creating a sonic boom that rattled windows, witnesses report.

The two-billion-mile-long band of atoms might mark the spot where the galaxy's magnetic field is squeezing the bubble around solar system, a new study says.

For the first time, spacecraft have observed eruptions on the sun from multiple angles for hours on end—a feat made possible by NASA's twin STEREO craft. Video.

Check out the tail-end of a galactic tussle, see the lighter side of Mars's "Labyrinth of Night," spy on ships' tracks as seen from the skies, and more in the week's best space pictures.

From the skies of Venus to the Martian underground--a new tool pinpoints the three extraterrestrial worlds most likely to support life in our solar system, along with two also-rans.

Today's announcement that U.S. swine flu deaths among children are "shooting up" is generating headlines. Meanwhile swine flu is infecting another group up to five times more often than the general public, advocates say.

Today's NASA "moon bombing" was a success, experts say—even if it may have been visible only via an "imagination filter." LCROSS's target crater, NASA said, may be devoid of water after all.

NASA's "moon bombing" Friday morning was successful, but the LCROSS impact proved anticlimatic to many skywatchers.

Today's NASA "moon bombing" was a success, experts say—but don't tell that to some sky-watchers. The LCROSS crashes may have been visible only via an "imagination filter."

NASA's LCROSS moon "bombing" this morning is just the latest moon crash in the name of science—in this case, the search for water. But are cosmic crashes worth the potential contamination and litter?

Giant, jelly-like sheets of dead and living organic matter, known as marine mucilages, are spreading throughout the Mediterranean. The blobs may smother marine life and carry diseases dangerous to humans.

A plant "phallus," a hungry sea star, and miniature "dreadlocks" are among this year's award-winning peeks into our small world.