Good prospects for extraterrestrial life? Rocky planets 'are commonplace' in our galaxy
Wednesday, April 14, 2010 - 12:14
in Astronomy & Space
Astronomers have discovered compelling evidence that rocky planets are commonplace in our Galaxy. They surveyed white dwarfs, the compact remnants of stars that were once like our Sun, and found that many show signs of contamination by heavier elements and possibly even water, improving the prospects for extraterrestrial life.