"The scary part about this one, of course, is that it's something we didn't even know about," said Patrick Paolucci, president of the online Slooh Space Camera"
In the last seven days, an asteroid the size of a city block and three smaller space rocks have zoomed safely by Earth, the latest demonstration that we live in a solar system that some scientists have dubbed a "cosmic shooting gallery."
All four asteroid flybys occurred between March 4 and Sunday, March 10. The asteroids were also all discovered this month, some just days ago. | Fox News
Football Field-Sized Asteroid Seen By Italian Observatory | Video | Space.com