Science news articles about 'asteroid bombardment'

Heavy asteroid bombardment could have helped life on Earth, instead of killing it off

... billion years ago, the Earth was pummeled by asteroids -- some as large as the state of Kansas -- during an episode known as the "Late Heavy Bombardment ...

A NASA-funded study indicates that an intense asteroid bombardment nearly 4 billion years ago may not have sterilized the early Earth as completely as previously thought.

... -billion-year history is filled with several turning points when temperatures changed dramatically, asteroids bombarded the planet and life forms came ...

... of molten rock. That was just an opening shot. Asteroid bombardment over billions of years has left the lunar ... Earth wasn't spared the abusive asteroid bombardment experienced by the Moon. Giant craters ...

... epic asteroid bombardment and lava flow to man landing on its surface, the Moon has a rich and violent history. The Lunar ...

... that Earth endured an especially heavy period of asteroid bombardment early in its history, are detailed in a research ... Institute in Boulder, Colo. The period of heavy asteroid bombardment -- from 4.2 to 3.5 ...