Here’s an image I came across that’s pretty amazing. The New Horizons spacecraft is on its way to Pluto, but recently used Jupiter for a gravity assist along its way. While passing by, it got this amazing photo of Io, one of Jupiter’s moons. Io is one of the most active places in the solar system, geologically speaking. This picture was taken March 1, 2007, and shows the plume of a volcano that’s approximately 200 miles (330 kilometers) high. Just amazing. You can read more at the New Horizons website.