What method is required to safely land heavy spacecraft on the surface of Mars?
Answer
Supersonic retropropulsion
Because the Martian atmosphere is too thin to adequately slow down heavy spacecraft using only parachutes, yet thick enough to generate extreme heat during descent, engineers must rely on supersonic retropropulsion. This technique involves firing engines against the direction of travel to decelerate the craft. This is a complex maneuver that requires extreme reliability, especially when managing human life support systems during the landing process.
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