Astronomers discovered earth's first Trojan asteroid dubbed "2010 TK7" rotating the sun in earth's orbit. It is 300 meters wide and about 48 million miles from earth.
Trojan asteroid shares the same orbit as Earth. Will it come in contact with Earth anytime soon?
Trojan asteroids share orbits with other planets in our Solar System to include Neptune, Mars and Jupiter. Two of Saturn's moons share orbits with Trojans, according to NASA.
Earth has joined a group of planets like Jupiter, Neptune and Mars which have Trojan asteroids as companions as they move around the sun in their orbits.
Scientists have discovered first Trojan asteroid companion to Earth that orbits around the sun along with Earth for thousands of years.
Astronomers studying data from an orbiting NASA observatory discovered the first known Trojan of the Earth.
We are not alone - a small asteroid, 1,000 feet across, has finally been found and it's orbital path shares Earth's orbit.
NASA has embraced a presidential directive to plant astronauts on an asteroid, a mission that officials say represents the most ambitious yet for the space agency.
See the first photo of Vesta
NASA's Dawn, locked in orbit around Vesta, has sent back the first ever close-up image of the asteroid (photos below).
NASA's Dawn became the first spacecraft to orbit asteroid Vesta on Saturday. It will remain in the orbit until July 2012.
NASA spacecraft Dawn has entered into an orbit around asteroid Vesta on Saturday.
NASA spacecraft Dawn entered into an orbit around asteroid Vesta on Saturday. It will study Vesta until July 2012. Then, it will travel to and study nearby dwarf planet Ceres in 2015.
NASA's Dawn spacecraft on Saturday has entered orbit around Asteroid Vesta to begin a year-long study of the second-most-massive object in the asteroid belt after the dwarf planet Ceres.
NASA's Dawn spacecraft orbits the asteroid vesta after a four year journey of getting there.
NASA Dawn spacecraft will approach asteroid Vesta for a prolonged orbit. Engineers expect Dawn to be captured by Vesta's gravity and into a prolonged orbit at approximately 10 p.m. PDT Friday, reported NASA.
NASA's Dawn spacecraft is set to begin a prolonged encounter with the asteroid Vesta on Friday, making the mission the first to enter orbit around a main-belt asteroid.
Scientists believe the images and information collected about Vesta will illuminate what happened in the early days of the universe.
Scientists believe the images and information collected about Vesta will illuminate what happened in the early days of the universe
NASA's Dawn probe is about to go into orbit around the Vesta asteroid, the second largest in an asteroid belt lying between Mars and Jupiter, in the culmination of a nearly four year journey.
The horn of an adult triceratops unearthed in Montana belongs to the last survivor of the mass extinction discovered by paleontologists. The find gives weight to the theory that an asteroid caused the catastrophic end of the age of Dinosaurs.
Asteroid 2011 MD, a small space rock the size of a tour bus, zipped past Earth in what was a close shave in cosmic terms. The flyby was tantalizingly close to Earth, and was at some point closer to the planet than some satellites.
