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I've recently learned that the general consensus is that several (if not, most) galaxies have super massive black holes in their center, in particular the Milky Way. This, at least to me, makes perfect sense seeing as we are in a spiral galaxy which means we need something to "spiral" around (a large body or a bunch of mass).

But seeing as we're rotating around this massive black hole, won't we inevitably end up sucked in by it? Aren't we spinning towards the center of the galaxy, or are we staying steady where we are?

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By the way, the spiral structure of some galaxies is a traveling density wave, and it does not reflect the movement of any particular stars, just as an ocean wave does not carry any water molecules with. The fact that stars are moving in (sometimes complicated) orbits holds in all galaxies, spiral pattern or not. –  Chris White Dec 17 '12 at 21:59
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up vote 9 down vote accepted

Look at the question a different way: will the Earth get "sucking into" the sun? Answer: no, it's in orbit.

Now, black holes are a little different because inside 3/2 of the Schwartchild radius there are no stable orbits, but at very large distances gravity is gravity and orbits are orbits.

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