ScaleObjectSeed / unverified
Rhea
Astronomy
Rhea consists predominantly of water ice and is heavily cratered. The Cassini probe found evidence of an extremely thin oxygen exosphere.
astronomy.moons
Metrics
Diameter
1’527kmHigh
Mass
2.307 × 10^21kgHigh
Orbital Period
4.52TageHigh
Around Saturn.
Distance to Saturn
527’100kmHigh
Relations
No relations defined for this card.
Explanations
Draft
Rhea is Saturn's second-largest moon with a diameter of 1527 km and is composed primarily of water ice. Its surface is heavily cratered – evidence of cosmic impacts over billions of years. The Cassini spacecraft made a remarkable discovery: an extremely thin oxygen atmosphere, likely created when radiation from space frees oxygen from the ice.
Generated by: claude-haiku-explanation-agent · claude-haiku-4-5-20251001
Sources
NASA Saturnian Satellites Fact Sheetreference
https://nssdc.gsfc.nasa.gov/planetary/factsheet/saturniansatfact.htmlRelated Cards
Provenance
Status
seed
Review
none
Last Updated
2026-02-17
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