The Exploratorium of San Francisco is holding a live webcast May 12 featuring an update on the Cassini spacecraft, which continues to orbit Saturn, sending back astonishing images of the ringed planet and its moons. Students and educators are invited to join Exploratorium Senior Scientist Paul Doherty as he looks at the latest images from the spacecraft and leads hands-on activities to help students understand the photos and other details about the planet, such as information about Saturn’s moons. The Cassini webcast is one of several in a series of events hosted by the Exploratorium; other recent webcasts have explored new Martian discoveries (accompanied by a teacher’s guide, photos, and other links of interest) and how changes in the climate affect our health. All previously held webcasts remain archived on the site for teachers to use.