Pluto's moon Charon features a massive, deep chasm

June 26, 2016 10:25 AM

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The Argo Chasma boasts the tallest cliff faces in the solar system.

Thanks to the viewing angle New Horizons got on its closest approach to Charon last July, scientists were able to estimate the depth of the Argo Chasma. In sections, the canyon is believed to be about 5.5 miles (or 9 kilometers) deep with sheer cliff faces several miles tall. Without a complete pict...

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