Do You Need to Worry About an Asteroid Hitting Earth?
It measures 130 to 300 feet across, a pebble compared to the asteroid that killed the dinosaurs, which is estimated to have been six to nine miles in length. On the other hand, on Feb. 15, 2013, an ...
Asteroid headed towards Earth could smash into the Moon, scientists say
Asteroid headed towards Earth could smash into the Moon, scientists say - Nasa expects chances of Earth collision to be ...
NASA’s asteroid mission to Apophis: Key for Earth’s defense
REx mission has an historic opportunity to closely observe the asteroid Apophis and improve our ability to defend against ...