Thanks to NASA's Hubble telescope, planet HD 189733 b has become the first planet outside the Solar System to have its color directly measured -- and, like Earth, it's blue! Unlike our home planet ...

The planet currently known as HD 189733b is one of the closest planets astronomers have discovered outside of our own solar system - only 63 light years away. It was first discovered in 2005, when ...

One of the greatest mysteries spotted by the Hubble Telescope could be called the ultimate UFO. Except it wasn't "flying;" it was just located in deep ...

The Hubble Space Telescope has captured the best pictures yet of our newest interstellar visitor. This comet from outside our solar system is zooming by us at a blistering 110,000 mph. Hubble caugh… ...

NASA's Hubble Space Telescope has detected an organic molecule in the atmosphere of a Jupiter-sized planet orbiting a star 63 light-years away.