Width and depth of the Grand Canyon along the Bright Angel hiking trail from the south to the north rim compared with the width and depth of Vallis Planck, one of the grand canyons on the Moon.

You don't need to go to Arizona to experience a grand canyon. This state park in Pennsylvania is known to have its own ...

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Width and depth of the Grand Canyon along the Bright Angel hiking trail from the south to the north rim compared with the width and depth of Vallis Planck, one of the grand canyons on the moon.

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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A tale of two canyons A comparison of the width and depth of the Grand Canyon along the Bright Angel hiking trail (top) and Vallis Planck on the moon’s south pole (bottom).