Merrillville Community Planetarium
Bringing the Universe to the Merrillville Schools and Northwest Indiana


Moon King is Now Saturn

Astronomers have discovered 20 more moons or natural satellites orbiting Saturn, making its new total 82! Jupiter has been the leader in orbiting satellites until now, with 79 moons found so far.

Saturn and Ring Interaction

The Cassini spacecraft ended its mission in September 2017, flying through Saturn’s magnetized environment, through icy, rocky ring particles, “smelling” the atmosphere between Saturn’s rings

Ravioli Moon

Embedded in Saturn’s rings, NASA’s Cassini spacecraft has imaged a ravioli-shaped moon called Pan. An unusual moon named after an unusual creature.

Mimas Has No Internal Ocean

Mimas is one of Saturn’s small moons. It’s known for looking like the “Death Star” of Star Wars fame.

Mimas May Have Ocean

Saturn’s closest major moon Mimas wobbles as it orbits the ringed planet. Scientists have studied many possibilities of why this could happen.

Underground Ocean on Enceladus

Enceladus is a small icy moon only 300 miles in diameter orbiting Saturn. Saturn or its moons do not lie in the habitable zone of our solar system.

Cassini Studies Magnetism

NASA’s Cassini spacecraft at Saturn is studying its magnetosphere, or the “magnetic bubble” around the planet.

Inside Titan

The Cassini spacecraft has been flying close to Saturn’s largest moon Titan to study it. Cassini took readings of Titan’s gravity to understand the moon’s interior structure better.

Saturn's Invisible Dust Ring

Using infrared radiation, the Spitzer Space Telescope has discovered a huge dust ring around Saturn. It’s the largest known ring in the solar system, but is invisible through a regular telescope.

Saturn's Hot Polar Vortexes

Saturn’s South Pole is tilted toward the sun and is very hot. The hot spot was discovered by the W.M. Keck Observatory in Hawaii.

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