(AP) — New research shows that when an asteroid slammed into the moon billions ... digging out two canyons comparable in size to Arizona's Grand Canyon in barely 10 minutes.

Spanning 25 miles in diameter, this crater is three times the size of the Grand Canyon, making it the largest known impact site in the U.S. and the 15th largest on Earth. The asteroid’s ...

An alternate explanation that fits the evidence is that Vesta was once part of a planet – but which planet that might been ...

They add: "The asteroid's orbit around the Sun sees it safely pass Earth several times in just a few years before ...