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Grand Canyon-size 'scar' on Mars revealed like never before in striking new satellite photos
A satellite orbiting Mars has captured the best-ever images of a gigantic "scar" carved ... This region contains two other ...
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Mars' must-visit destinations: Explore the Red Planet's future tourist hotspots
Its otherworldly terrain could provide stunning views and plenty of photo opportunities ... largest volcanoes on Mars. Besides Olympus Mons, you'd also see Arsia Mons, Pavonis Mons, and Ascraeus ...