Costa Rica's Radical Rocket

Getting to Mars' or anywhere else in the solar system-may be easier with Ad Astra Rocket Co.'s plasma thruster

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Photo: Randi Silberman
TAKING THE HEAT: The main challenge for this lab is to design a thermal jacket for the thruster, which will line its walls and remove excess heat that can damage the materials with long-term use. Some of the heat will be radiated out into space, and some of it will be returned to the plasma stream to accelerate the propellant even more.
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