Astronomers Explain Mars’s Lopsided Shape - New York Times

UC Santa CruzAstronomers Explain Mars’s Lopsided ShapeNew York Times - 1 hour agoBy KENNETH CHANG The lopsided shape of Mars may well be the result of a cataclysmic impact of a Pluto-size meteor billions of years ago, three teams of scientists are reporting.Mars' two-faced riddle 'solved' BBC NewsScientists think Mars took a punch that made it two-faced USA TodayScientific American - The Associated Press - World Science - National Geographicall 124 news articles

http://news.google.com/news/url?sa=T&ct=us/2-0&fd=R&url=http://www.nytimes.com/2008/06/26/science/space/26mars.html&cid=1224249210&ei=9s1iSPOSKILUlgTK5tjkDA&usg=AFQjCNEff-UDr9zAJXD1xD8bp7Mn5qgZDg