CAPE CANAVERAL, Fla. (AP) — A NASA spacecraft has confirmed there’s ice at Mercury’s north pole.

Scientists announced Thursday that the orbiting probe, Messenger, has found evidence of frozen water, even though Mercury is the closest planet to the sun. The ice is located in the permanently shadowed region of Mercury’s north pole. It’s thought to be at least one-and-a-half feet deep — and possibly as much as 65 feet deep.