Super Grand Canyon

Pluto's largest moon Charon is home to an unusual canyon system that is far longer and deeper than Earth's Grand Canyon, according to a new image beamed back by NASA's New Horizons spacecraft.

New Horizons scientists estimate Argo Chasma to be as deep as 9 km, which is more than five times the depth of the Grand Canyon.

Pluto's largest moon Charon is home to an unusual canyon system that is far longer and deeper than Earth's Grand Canyon, according to a new image beamed back by NASA's New Horizons spacecraft.

New Horizons scientists estimate Argo Chasma to be as deep as 9 km, which is more than five times the depth of the Grand Canyon.