10 NASA space technologies that may never see the cosmos

NASA has robots, rockets, inflatable homes and lots of other advanced technology that may never lift off.

Moon rocket: Northrop Grumman said it successfully demonstrated the rocket engine known as the TR202 lunar descent engine that could be used on the spacecraft that lands on the moon. Northrop pintle injector technology was used on the original Apollo Lunar Module Descent Engine and the company is working with NASA to develop the technology as a candidate propulsion option for the NASA Altair lunar lander. According to NASA, Altair will be capable of landing four astronauts on the moon, providing life support and a base for weeklong initial surface exploration missions, and returning the crew to the Orion spacecraft that will bring them home to Earth.

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