Tunnels ending in light, your life flashing before you, out-of-body sensations. Near-death experiences merit further study without prejudice, these researchers say.
Australian astronomers say our Milky Way galaxy has only half the dark matter we thought it did. If so, it explains the shortage of Milky Way satellites.
Last volcanic activity on moon thought to be a billion years ago. Now small lava flows on moon’s dark plains suggest activity as recently as 50 million years ago.
The MESSENGER spacecraft, now orbiting Mercury, caught the images to make this movie of last Wednesday's lunar eclipse. See Earth and moon from Mercury!
Scientists using the Hubble Space Telescope have completed the first map of temperature and water vapor on a "hot Jupiter," an exoplanet called WASP 43b.
Satellite data show that one small “hot spot” in the U.S. Southwest produces the largest concentration of the greenhouse gas methane seen over the United States.