Enceladus Moon
Enceladus — moon of saturn. Active cryovolcanic geysers at south pole Tiger Stripe fractures — ejecting ~200 kg/s of water ice, vapor, and organics. Global…
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| Parent planet | Saturn |
|---|---|
| Diameter | 504 km |
| Orbital period | 1.37 days |
| Distance from parent | 238,020 km |
| Surface composition | Water ice, Organics, Salts |
| Resource potential | VERY HIGH |
Details
Active cryovolcanic geysers at south pole Tiger Stripe fractures — ejecting ~200 kg/s of water ice, vapor, and organics. Global subsurface ocean (~10 km deep, under 30-40 km ice shell). Hydrothermal activity detected: H₂ in plumes indicates serpentinization (water-rock reactions at >90°C). Complex organics (C₁-C₅ compounds), NH₃, and phosphorus (detected 2023) — all ingredients for life as we know it. Cassini flew through plumes multiple times; Enceladus Life Finder proposed but not funded. Best candidate for extant extraterrestrial life in solar system. ΔV from LEO ~15 km/s. Surface gravity 0.113 m/s² facilitates landing.
南极虎纹断裂处存在活跃的低温火山喷泉 — 喷射约 200 kg/s 的水冰、水蒸气与有机物。全球性次表层海洋（深约 10 公里，覆盖于 30-40 公里冰壳下）。已探测到热液活动：羽流中的 H₂ 表明存在蛇纹石化反应（>90°C 的水-岩相互作用）。复杂有机物（C₁-C₅ 化合物）、NH₃ 和磷（2023 年发现）— 已知生命的全部必需成分。卡西尼号曾多次穿越羽流；土卫二生命探测器项目已提出但未获资助。是太阳系内现存地外生命的最佳候选地。从近地轨道出发所需 ΔV 约 15 km/s。表面重力 0.113 m/s² 便于着陆。
Sources / 数据来源
JPL Horizons / NASA NSSDCA / IAU MPC