Rings Across the Solar System

Students learn that all four giant planets and at least two small distant worlds have rings, what rings are made of, how shepherd moons and the Roche limit shape them, and how astronomers discover rings by watching stars blink.

Grades 5-8About 15 minutes of narrated flight, plus discussion stops8 stops

The full guide, with the 40-minute plan, discussion key points, exit ticket, activities, transcript and PDF, comes with a teacher license. Already licensed? Use Open the full guide.

What students will see and do

Students visit Saturn for three stops (the main rings, gaps and shepherd moons, the Roche limit), then Jupiter's dusty rings, Uranus, Neptune's ring arcs, and the distant worlds Haumea and Quaoar. Aetherion pauses for discussion at the first Saturn stop (why rings are so flat), at Uranus (finding rings through starlight) and at Quaoar (what to do when nature seems to break a rule).

Learning objectives

• Describe what Saturn's rings are made of and how thin they are compared to their width.
• Explain how the Roche limit keeps ring material from forming a moon.
• Explain how shepherd moons and repeated gravitational tugs create narrow rings and gaps.
• Compare the rings of Saturn, Jupiter, Uranus and Neptune, and describe how rings were discovered around Haumea and Quaoar.

NGSS connections

Stops on this journey

1. The Grandest Rings (discussion stop)
2. Gaps and Shepherd Moons
3. The Roche Limit
4. Jupiter's Dusty Rings
5. Uranus and the Blinking Star (discussion stop)
6. Neptune's Ring Arcs
7. A Ring Around Haumea
8. Quaoar's Puzzling Ring (discussion stop)

Vocabulary

• ring system
• ring particle
• shepherd moon
• Roche limit
• tidal force
• stellar occultation
• ring arc
• dwarf planet