Friday, August 3, 2012

Answer To Question 44

A44: 1991 BA is the closest and smallest asteroid yet observed outside the Earth's atmosphere. It is 3-6m in diameter. It passed very close-by to the Earth in 2003 - in fact, it was the closest approach by an asteroid that didn't hit the Earth that has ever been documented, at a distance of 88,000km.

No comments: