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View submission: Ask Anything Wednesday - Physics, Astronomy, Earth and Planetary Science
To expand on /u/curien's answer, the key here is density. At a distance outside a star or it's black hole counterpart, the gravity felt is the same. But this isn't true after you cross the threshold of the star's surface. When you are inside the star, the effect of gravity pulling you towards the center of the star decreases since there is less mass towards the center of the star. Note that this is not the same as pressure, the pressure will still be very intense, but gravity will be less so. The further into the star you go, the smaller the force of gravity, but the opposite will be true for a black hole since the density of a black hole is infinite. I.e. as you get closer a blackhole's center, the effect of gravity increases.
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