Last Updated: Friday, October 28, 2011, 13:59
An international research team of astronomers have discovered three new planets- each orbiting its own giant, dying star –outside our solar system.
Last Updated: Thursday, January 14, 2010, 10:55
A mystery object from space whizzed close by Earth on Wednesday. It did not hit our planet, but confused scientists over what exactly it was.
more videos >>