Chelyabinsk asteroid

A planet-ending celestial object strikes the Earth every few million years. But an asteroid doesn't have to be hundreds of kilometers wide to cause substantial damage. For example, the asteroid that exploded over the city of Chelyabinsk on…

Asteroids often make close approaches to Earth, and they mostly do so without causing any harm. However, there is no guarantee that an asteroid will not hit Earth in the future. If history has taught us anything, nothing in life is…

Astrophysicist Neil deGrasse Tyson spoke about the asteroid horror story, dubbed the Chelyabinsk disaster, in Russia. Know just how dangerous an asteroid can be. On February 15, 2013, an asteroid exploded over the city of Chelyabinsk,…