How does a spacecraft land softly on Mars?
Quick Answer
It uses a heat shield, parachute, and often retrorockets or a sky crane to slow down through Mars’s thin atmosphere. Because Mars’s air is too thin for parachutes alone, powered descent is essential for large landers.
The Full Story
Landing on Mars is difficult because the planet’s atmosphere is only about 1% as dense as Earth’s. A spacecraft first uses a heat shield to survive atmospheric entry, then deploys a supersonic parachute to slow down as much as possible. For heavier missions, parachutes alone are not enough, so retrorockets take over near the surface; NASA’s Curiosity and Perseverance rovers used the sky-crane system for the final touchdown. This combination allows a vehicle to survive entry speeds of several kilometers per second and land gently enough to operate.
Key Facts
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Suggested video title for this topic:
"The wild choreography of landing on Mars."
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