NASA Launches Mission To Retrieve Ancient Asteroid Dust
The mission aims to circle a hill-sized asteroid for two years, then skim its surface and bring a hearty sample of 4.5 billion-year-old dirt back to Earth.
asteroid
An Asteroid Is Passing Very Close To Earth Today. Here's How To See It
At its closest point, asteroid 2004 BL86 came within about 750,000 miles from Earth — or almost three times farther away than the moon.