New photos reveal massive canyon on Mars, the largest in the solar system, NASA says – USA TODAY

Arizona’s Grand Canyon may be awe-inspiring, but it’s just “a scratch” compared to the Valles Marineris Canyon on Mars, new photos reveal.

  • The canyon on Mars would reach from New York City to San Francisco if placed in the United States.
  • Scientists still aren’t sure how the gargantuan canyon complex formed.
  • Mars …

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