Just one day after NASA’s New Horizons spacecraft made its closest approach to distant Pluto, scientists got their first glimpse at images showing that the dwarf planet and its largest moon may both be geologically active.

That has the space agency now searching the data coming back from the space probe for evidence of geysers and volcanoes.

“It’s a small world with deep canyons, troughs and cliffs and dark regions that are still mysterious to us,” said mission deputy project scientist Cathy Olkin during a news conference Wednesday afternoon. “There is so much interesting science in one image alone…. Pluto did not disappoint. I can add that Charon did not disappoint either.”

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