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

While NASA has made progress in tracking the largest asteroids, “There is still some chance that large comets from the outer solar system could appear and impact the Earth with warning times as ...

and the largest asteroids in our solar system. The process of detecting nearby asteroids takes place at the Minor Planet Center, which is responsible for recording and distributing positional ...

While most of the debris Earth encounters burns up harmlessly in the atmosphere, NASA is most concerned about the largest asteroids, some of which are miles wide.Dr. Joshua Colwell, a planetary ...

He explains why the size and speed of asteroids matters and how our atmosphere protects from all but the largest asteroids. Greg does this by showing how air pressure alone can be used to ignite ...