10don MSN
Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...
16d
Green Matters on MSNPhysicist Finally Solves the Mystery Behind Strange Polka-Dot Patterns Found in the Grand CanyonA region north of the Grand Canyon is riddled with mysterious spots and the expert came up with the most probable cause of it.
The Earth's Grand Canyon took millions of years to carve, but the moon's grand canyons took about ten minutes.
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