Spacecraft, heal thyself. Mixing materials science with a few ideas from medicine, aerospace engineers are developing self-repairing materials that "heal" themselves when damaged.
After a string of weather-related delays, NASA successfully launched its New Horizons spacecraft, sending it on a ten-year mission to Pluto and beyond.
Space around Earth is filling up with human-made debris, adding risk to human and robotic space missions. Experts say it's time to collect large pieces of old junk.
NASA postponed until Wednesday the planned launch of its New
Horizons spacecraft, which is set to embark on a nine-year,
three-billion-mile journey to Pluto.
If beauty is in the details, here's one of the most beautiful pictures ever. The Hubble telescope has made a supersharp image that sheds new light on star birth.
About 1.8 billion years ago, a meteorite or comet the size of Mount Everest slammed into Earth, turned part of the crust inside out, and dusted the surface with a rare metal.
Astronomers have found two new rings and two moons in orbit around Uranus, showing the planet's surroundings to be much more volatile than scientists realized.
Bombarded by violent storms of dry ice, the red planet's ice caps may have fewer silent nights than generally thought, according to new weather models.
