First US lunar lander in more than 50 years rockets toward moon with commercial deliveries

submitted by neolib from (apnews.com)

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[–]Alienhunter 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

This is very easy to prove with a vacuum chamber and some pressurized spray can of any sort. Place the pressurized spray can onto a cart or suspend it from the top of the contained, then depressurize it and see if it moves.

There's no need for back pressure of any sort. The initial push is from expelling the matter in the first place.

[–]Tom_Bombadil 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

There's no need for back pressure of any sort.

This is the error in your assessment.

Here's an exceedingly clever experiment, which stimulates the removal of the atmosphere with a rocket.

Rockets can't work in the vacuum of space science experiment.

Notice how the rocket jumps backwards when the parachute comes out. The equal and opposite reaction that doesn't occur with the rocket.