"NASA Captures Images of Spinning Stadium-Sized Asteroid Near Earth"

NASA captured detailed images of asteroid 2008 OS7, which passed 1.8 million miles from Earth in early February, using the Goldstone Solar System Radar in California. The asteroid's trajectory posed no danger, and NASA used a powerful radio antenna to determine its size, rotation, shape, and surface details. While the solar system used to be more chaotic, astronomers have identified most "planet-killer" asteroids and the likelihood of a significant impact in the next century is low.