This week Toyota announces new safety measures. But another recall and news that its research firm altered documents requested in a government probe have some consumer advocates questioning whether the automaker is serious about safety.
Giant propeller-shaped structures appear to be created by a new class of hidden moons.
Solar energy is all that an experimental plane needed to complete its first 24-hour test flight.
This false-color mosaic was constructed from a series of 53 images taken through three spectral filters by Galileo's imaging system as the spacecraft flew over the northern regions of the Moon on December 7, 1992. The part of the Moon visible from Earth is on the left side in this view.
Moonbase Alpha has players working together to restore oxygen flow and critical systems on a virtual lunar base after a meteor strike.
Astronomers have observed a black hole releasing a pair of powerful jets that are creating a massive bubble of hot gas some 1,000 light-years across.
This image shows average temperatures in April, 2003, observed by AIRS at an infrared wavelength that senses either the Earth's surface or any intervening cloud. Similar to a photograph of the planet taken with the camera shutter held open for a month, stationary features are captured while those obscured by moving clouds are blurred. Many continental features stand out boldly, such as our planet's vast deserts, and India, now at the end of its long, clear dry season.
If you've got an adventurous spirit and a fat bank balance, these out-of-this-world holidays are for you.
Possibly the Youngest Galaxy Ever Seen, an irregular dwarf galaxy about 45 million light-years away is seen in this image from NASA.
An unmanned Russian ship loaded with nearly 2.5 tons of fresh food, clothes, and equipment has gone rogue, blowing past the International Space Station.