We take a look at the answer to this intriguing question
Deep Space
Deep Space
News
Rosetta releases final images before comet landing
Check out the final moments of the comet chaser – in pictures
Solar System
VIDEO: Watch a space rock smash into the Moon at 56000 mph
The object was the size of a small boulder and may be part of a meteor swarm that also flew past Earth
News
New image release: Hubble captures aftermath of galaxy collision
A curious galaxy has been caught dancing the crazed dance of a galactic merger
Space Exploration
Why don’t objects collide often in Earth orbit?
Find out why manmade satellites don’t crash into each other all the time
News
Will comet 2013 A1 smash into the Martian surface in October 2014?
Comet 2013 A1 (Siding Spring) is set for a close encounter with the Red Planet in late 2014.