If the information is correct, [See related question] then there are more stars in the Universe.
There is an estimated 100 billion galaxies in the observable (note observable) Universe, and say 100 billion stars per galaxy.
This gives a total of about 10,000,000,000,000,000,000,000 stars or 1 x 1022 or 10 Sextillion.
It uses thruster engines. Every action has an equal and opposite reaction
No. There is no currently no need for guns in space. Modern firearms would also be a bit inefficient due to the fact that every action creates and opposite and equal reaction (i.e. recoil would suck in zero gravity).
Space is a vacuum. All of your insides would get sucked out of every hole in your body. Every hole.
Newton's Third Law: For every action, there is an equal and opposite reaction.
the spray will fly around the ship And, being weightless, the force of your sneeze would most likely propel you backwards. For every action there is an equal and opposite reaction.
You would go backwards because for every action there is an equal but opposite reaction. Addendum: Actually, being in freefall (microgravity actually), your body would begin a complicated spin. Keep in mind that you mould move equal to both the mass of the ball and the inertial force of the arching motion of your arm.
By forcing out gas in the opposite direction at high speed. Every action having an equal and opposite reaction.
It would take a lot of money because you have to pay for every thing to be able to survive and get to outer space.
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Are you asking why the missions were performed (exploration) or why rockets move (every action is balanced by an equal and opposite reaction)?
earth
There are 500 white blood cells to every 1000 red blood cells (or you could say there is double the amount of red blood cells). The answer would be 200 red blood cells for every 100 white blood cells.