Mars Entry Descent and Landing

Entry, descent and landing is one of the most demanding parts of a Mars mission because speed must be reduced from interplanetary flight to a safe surface landing. Engineering decisions for Mars must account for the thin atmosphere, communication delay, changing illumination and difficult terrain.

Mars is a world where apparently simple questions often lead to larger scientific problems. Researchers combine spacecraft images, measurements from orbit, surface observations and laboratory analysis of Martian material to build explanations that can be tested. As with all planetary science, the strongest conclusions come from multiple observations that agree with one another.

The value of studying mars entry descent and landing is not limited to one isolated fact. Mars is a rocky planet with a long geological history, a thin atmosphere and evidence that its environment changed substantially over time. Individual observations become more useful when they are placed into that larger planetary context.