Go online to watch big asteroid zoom past our planet
A city-block size asteroid will fly by Earth this weekend, well beyond the orbit of the moon, and you can watch it zip safely by live in an online webcast.
The asteroid 2002 AM31 will make its closest approach to Earth on Sunday, when it will pass by at a range of about 3.2 million miles (5.2 million kilometers). That's about 13.7 times the distance between Earth and the moon.
On Sunday, the Slooh Space Camera skywatching website will host two live webcasts to offer Internet denizens views of the space rock from telescopes at the Prescott Observatory in Arizona and the Canary Islands, off the west coast of Africa.