Lunar Evacuation System Assembly (LESA)

Among preparations for NASA’s 2024 Moon mission, one has been to test a device called Lunar Evacuation System Assembly, or LESA.

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What is LESA?

LESA is a pyramid-like structure whose purpose is to rescue an astronaut should he or she suffer an injury on the lunar surface.

Who has developed LESA?

LESA has been developed by the European Space Agency (ESA)

Why LESA is needed?

Astronauts will be wearing heavy extravehicular activity (EVA) suits and there is no way an astronaut could carry their fallen crewmate over their shoulder while wearing an EVA suit.

How LESA is operated?

LESA can be operated by a single astronaut to rescue a fallen colleague. It enables an astronaut to lift their crewmate onto a mobile stretcher in less than 10 minutes, before carrying them to the safety of a nearby pressurised lander.

Where is LESA testing going on?

Astronauts are testing LESA under the sea. With its rocky, sandy terrain and buoyant salt water, the bottom of the ocean floor has much in common with the lunar surface.