Hidden Oceans
Students learn the evidence for liquid water oceans hidden beneath ice on Europa, Ganymede, Enceladus and Titan, the possible oceans on Triton, Pluto and Ceres, and why liquid water matters in the search for life.
Grades 5-8About 15 minutes of narrated flight, plus discussion stops8 stops
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What students will see and do
Students start at Earth, then fly to Jupiter (Europa and Ganymede), Saturn (Enceladus, then Titan), Neptune (Triton), Pluto, the dwarf planet Ceres, and back to Earth. Aetherion pauses for discussion at Jupiter (what makes magnetic evidence convincing), at Saturn's Enceladus stop (sampling a plume), and at Pluto (signs of an ocean on a small, distant world).
Learning objectives
- Explain why liquid water is important in the search for life beyond Earth.
- Describe at least three kinds of evidence scientists use to detect hidden oceans, such as magnetic signals, plumes, and tidal flexing.
- Identify which worlds have strong evidence for oceans and which are still possible ocean worlds.
- Use the idea of tidal heating to explain how water can stay liquid far from the Sun.
NGSS connections
| MS-ESS1-3 | Students compare surface and interior properties of icy moons and dwarf planets across the solar system. |
|---|---|
| MS-ESS1-2 | Gravitational tugs from giant planets cause tidal flexing that heats moon interiors and keeps oceans liquid. |
| MS-PS2-5 | Europa's and Ganymede's oceans were detected through their effects on magnetic fields, an example of fields acting at a distance. |
Stops on this journey
- Why Water Matters
- Europa and Ganymede (discussion stop)
- Enceladus Sprays Its Ocean (discussion stop)
- Titan's Deeper Secret
- Triton's Geysers
- An Ocean Under Pluto's Heart? (discussion stop)
- Salty Spots on Ceres
- A Solar System Full of Water
Vocabulary
- subsurface ocean
- plume
- hydrothermal vent
- tidal flexing
- brine
- organic molecule
- magnetometer
- dwarf planet