Sentences with phrase «dangerous than asteroids»
Land - based impacts were, on average, an order of magnitude more dangerous than asteroids that landed in oceans.
https://www.sciencedaily.com/ Not exact matches
So far, surveys have discovered several thousand near - Earth objects, but astronomers estimate that as many as a million have diameters greater than 50 metres, big enough to be dangerous in a collision with Earth (see UN urged to coordinate killer asteroid defences).
From there it could hunt for potentially dangerous near - Earth asteroids, and could find ten times more asteroids than discovered so far.