Asteroids are rocky objects orbiting the Sun, leftovers from the solar system's formation about 4.6 billion years ago. Most reside in the asteroid belt between Mars and Jupiter, but some orbit closer ...

Astronomers have discovered a 2,300-foot-wide (700 meters) asteroid hidden in the sun's glare, and it’s whizzing through our solar system at a near record-breaking pace. The skyscraper-size asteroid, ...