Feast Your Eyes on New Photos of the 'Grand Canyon of Mars'
by Elizabeth Yuko from Lifehacker on (#5CMPZ)

There's still so much we don't know about Mars, but thanks to some recently released photos, we've gotten a much better look at the Red Planet's equivalent of the Grand Canyon. Although, that's not exactly accurate: the one on Mars-called Valles Marineris-is nearly 10 times as long and three times as deep as ours on...