JF flew about 199,000 miles (320,000 km) away from Earth. It's estimated size is about 34 feet wide (10 meters), roughly the size of a bus. Orbit animation courtesy: NASA/JPL-Caltech | mash mix by ...

Two new studies used gravity data to pull back the curtain on the deep interiors of the Moon and one of the solar system’s largest asteroids.

The asteroid poses no threat to the moon or Earth. A newly discovered house-size asteroid is set to make a close, yet ...