Jupiter’s Largest Moons
Slide 24
23.3 The Outer Planets
The most prominent feature of Saturn is its system of rings.
Features of Saturn
• Saturn’s atmosphere is very active, with winds roaring at up to 1500 kilometers per hour.
• Large cyclonic “storms” similar to Jupiter’s Great Red Spot, although smaller, occur in Saturn’s atmosphere.
Slide 25
Cassini Approaching Saturn
Slide 26
23.3 The Outer Planets
Saturn’s Rings
• Until the discovery that Jupiter, Uranus, and Neptune have ring systems, this phenomenon was thought to be unique to Saturn.
• Most rings fall into one of two categories based on particle density.
Saturn’s Moons
• Saturn’s satellite system consists of 31 moons.
• Titan is the largest moon, and it is bigger than Mercury.
Slide 27
Saturn’s Rings
Slide 28
23.3 The Outer Planets
Instead of being generally perpendicular to the plane of its orbit like the other planets, Uranus’s axis of rotation lies nearly parallel with the plane of its orbit.
Slide 29
Uranus
Slide 30
23.3 The Outer Planets
Winds exceeding 1000 kilometers per hour encircle Neptune, making it one of the windiest places in the solar system.
Slide 31
Neptune
Slide 32
23.3 The Outer Planets
Pluto’s orbit is highly eccentric, causing it to occasionally travel inside the orbit of Neptune, where it resided from 1979 through February 1999.
Slide 33
An asteroid is a small, rocky body whose diameter can range from a few hundred kilometers to less than a kilometer.
Most asteroids lie between the orbits of Mars and Jupiter. They have orbital periods of three to six years.
Slide 34
Irregular Orbits of Asteroids
Slide 35
23.4 Minor Members of the Solar System