July 15, 2015 4:02 PM EDT

NASA’s latest images of Pluto show off a gigantic icy mountain range that formed no more than 100 million years ago. The mountains are “mere youngsters” compared to the 4.56-billion-year age of our solar system, the agency said. The photos are the latest from NASA’s New Horizons mission to Pluto.

See the photos in the gallery above.

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