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课程 9 · 年级 6–9
Mars: rovers and future humans
📖 课程
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🎯 测验——选择翻译
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✅ 本课已完成
Mars is the best-studied planet after Earth. Robot rovers drive there: Sojourner, Spirit, Opportunity, Curiosity and Perseverance — analyzing rocks and hunting traces of ancient water. Perseverance even caches soil samples for a future return mission. The helicopter Ingenuity made the first flight in another planet\u2019s atmosphere!
- ●A Mars day ≈ 24 h 37 min — almost like Earth
- ●Temperature: −60 °C average, down to −120 °C at the poles
- ●Olympus Mons: 21 km high — 2.5× Everest
- ●Radio takes 3–22 min to Earth — no live calls
🚀 SpaceX and ESA plan crewed Mars missions. The trip takes ~7 months — 500× longer than the Moon.