A new study analyzing data from NASA’s Cassini spacecraft suggests that the lake, known as Ontario Lacus, behaves most similarly to what we call a salt pan on Earth.

In celebration of this year’s Earth Day on April 22, NASA’s Global Climate Change website has unveiled a new version of its popular image gallery, “State of Flux.” The gallery presents stunning images, mostly from space, of our ever-changing planet, chronicling changes taking place over time periods ranging from days to centuries.

Mountain plants across the continent are moving to higher altitudes. The new article is based on detailed surveys of 66 mountain summits in Europe. Scientists mapped all plant species at each European site in 2001 and 2008.