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Sources

• "Found 20 light years away: the new Earth." Daily Mail. April 26, 2007. http://www.dailymail.co.uk/pages/live/articles/technology/
  technology.html?in_page_id=1965&in_article_id=450467
• "Hunting for another Earth-like planet." BBC News. Aug. 7, 2007. http://news.bbc.co.uk/2/hi/science/nature/6933841.stm
• "White dwarf harbors signs of Earth-like planets." Reuters. CNN.com. Aug. 17, 2007. http://www.cnn.com/2007/TECH/space/08/17/white.dwarf.reut/index.html
• "White dwarfs." NASA. Dec. 1, 2006. http://imagine.gsfc.nasa.gov/docs/science/know_l2/dwarfs.html
• Dunham, Will. "Burned-out star harbors sign of Earthlike planets." Reuters. Aug. 16, 2007. http://www.reuters.com/article/scienceNews/idUSN1636758720070816
• Than, Ker. "Newfound Planet Has Earth-Like Orbit." Space.com. Aug. 2, 2007. http://www.space.com/scienceastronomy/070802_redgiant_planet.html
• Than, Ker. "Scientists find most Earthlike planet yet." MSNBC. April 25, 2007. http://www.msnbc.msn.com/id/18293978/