New exoplanet, size of Jupiter, discovered
Wednesday, March 17, 2010 - 14:21
in Astronomy & Space
Astronomers have discovered a new planet the size of Jupiter. The planet is mostly made of hydrogen and helium, but may contain up to 20 Earth masses of heavier elements including rock and water under high pressure. It thus appears to be very similar to the solar system's giant planets, Jupiter and Saturn.