Rockets

A rocket is a vehicle that uses jet propulsion to accelerate without using the surrounding air and is often used to leave the earths atmosphere. A rocket engine produces thrust by reaction to exhaust expelled at high speed. Rocket engines work entirely from propellant carried within the vehicle; therefore a rocket can fly in the vacuum of space.

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New Deep Space Rocket

Today, NASA officially announced the design of its forthcoming Space Launch System–a heavy-lift rocket capable of taking humans into deep space. It will be the primary vehicle to replace the Space Shuttle, but with significantly more power—enough to reach Mars.

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