Where is the water that was plentiful on the red planet billions of years ago? (planetary.org)
The diamonds in meteorites that crashed in Sudan were compelling evidence of a lost planet billion years ago, according to a new study. (techtimes.com)
«We found evidence that even on a distant cold planet billions of miles from Earth, there is sufficient energy for vigorous geological activity, as long as you have something as soft and pliable as nitrogen ice.» (sciencedaily.com)