How are the engines in the nasa’s spaceships powered?

How do the engines work anything informative on it? Its a broad question but im looking for any info.

very carefully!!!!!!

HA!!! sorry couldn’t help it

the shuttles =

The main engines develop thrust by using high-energy liquid propellants 6 parts liquid oxygen to 1 part liquid hydrogen (by weight)

The propellants are partially combusted in dual preburners to produce high-pressure hot gas to drive the turbopumps.

http://www.nasa.gov/returntoflight/system/system_SSME.html

different types of rocket engines

http://en.wikipedia.org/wiki/Rocket_engine#Types_of_rocket_engines

Nasa’s new Ion engines are looking good

http://nmp.nasa.gov/ds1/tech/sep.html

How Two-stroke Engines Work

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