Tantalized by images from NASA's Hubble Space Telescope and ground-based data, scientists thought the giant asteroid Vesta deserved a closer look. They got a chance to do that in 2011 and 2012, when NASA's Dawn spacecraft orbited the giant asteroid, and they were able to check earlier conclusions.
The highly-patterned surface of the giant asteroid Vesta is caused by a long history of strikes from hundreds of other, smaller asteroids.
Enormous troughs that encircle the asteroid Vesta may be faults that formed when another asteroid smacked into its south pole, and indicate that it has the same type of interior as a planet.
Recent images snapped by NASA's Dawn spacecraft confirm that volatile, or easily evaporated materials, have colored Vesta's surface in a broad swath around its equator.
NASA's Dawn spacecraft has discovered evidence of water on the surface of the asteroid Vesta - but not much of it.
NASA's Dawn spacecraft remains on track to become the first probe to orbit and study two distant solar system locations.
A new video shot by NASA’s Dawn spacecraft depicts a dappled, variegated surface of the giant asteroid Vesta.
The asteroid Vesta is more like a planet or a moon, new data from NASA's Dawn spacecraft shows.
Scientists studying images of the giant asteroid Vesta are working to explain the existence of a number of bright spots.
Since last July, NASA’s Dawn spacecraft has been orbiting the asteroid Vesta and transmitting gigabytes of images and other relevant data.
NASA's Dawn probe is beginning the first of four science orbits, and has sent back its first close-up images.
Today, after a four-year journey, NASA's Dawn spacecraft will go into orbit around the asteroid Vesta, where it will stay and make observations for a year.