Scientists are disputing the claim made by two U.K.-based astronomers earlier this week that microscopic alien life is responsible for the distinctive features of a comet. Comet 67P/Churyumov–Gerasimenko appears to have a black crust, flat-bottomed craters and mega boulders on its surface, said Dr. Mark Wallis of the University of Cardiff and Chandra Wickramasinghe, who heads…
Scientists skeptical about claim of alien life on Rosetta comet
