Fact of the Day Image August 21st

We’re used to thinking of volcanoes as spewing hot molten lava, since that’s mostly the way they function on our home planet. But in space, a volcano can spew water, methane, or ammonia, and those materials can freeze and turn into a volcanic snow! These are called cryovolcano. These volcanoes are common on Pluto and on many of Jupiter’s and Saturn’s moons.