how do stars and planets effect eachother?

"Planets May Affect the Chemistry of Their Stars. Planets are, by and large, at the mercy of their stars. Not only do stars provide a ready energy source of radiated light and heat, but the mass and gravitational pull of stars flat-out dwarfs the summed masses and pulls of any orbiting companions."

Stars and planets each have their own gravitational pull. Obviously a star would have a larger gravitational pull than a planet because it's larger. A star's gravitational pull keeps a planet in orbit around that star.

Explanation:

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that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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