An asteroid strike 66 million years ago caused millions of species to go extinct—including many mollusks. By studying the ...

A gigantic asteroid, roughly the height of the Eiffel Tower, is heading towards Earth for what astronomers are calling a ...

MH4, as tall as the Eiffel Tower, will safely pass Earth on May 24. Though not a threat, it's classified as potentially ...

NASA has tracked four asteroids set to safely fly past Earth between May 23 and 25, including one the size of a stadium.