Space.com editor-in-chief Tariq Malik gives you a peek at the biggest piece of Mars discovered on Earth. Currently on display at Sotheby's in New York City. <b<br/>r/>

Credit: Space.com | edited by Steve Spaleta

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Howcast - Check out part 7 and explore Mars with Jane Shepard and find out why Cerberus is attacking in this walkthrough for Mass Effect 3.

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