Feature Astronomy The Star That Ate a Mars Astronomers study white dwarf pollution for clues to extrasolar planet ingredients Share this:FacebookTwitterPocketRedditPrintEmail By Charles Petit July 3, 2009 at 2:24 pm This article is only available to Science News subscribers. Subscribers, enter your e-mail address to access our archives. Client key* E-mail* Log in Not a subscriber? Science News is a nonprofit. Support us by subscribing now. Subscribe