A quartet of particularly hefty asteroids ... making it the largest of the four, will reach a minimum distance of 2.8 million ...

Although Thursday's routes do mark the closest recorded Earth approaches to date for these asteroids, their paths are still quite far away, too distant for any human to spot one of them zooming ...

Every year, over 3,000 near-Earth asteroids (NEAs) are found by NASA's survey telescopes. With the use of more powerful and ...