Does the Milky Way have gravity?

Answer 1

Yes, as far as we can tell (it is difficult to see when you are in it) the Milky Way is a barred spiral galaxy with at least four spiral arms. It is a disk of about 400 billion stars 1,000 light years thick with a diameter of about 100,000 light years.

The bar in the center of the spiral rotates every 15 to 18 million years, while the spiral arm pattern (these are a pressure wave effect) rotates every 50 million years. Our sun which is 26,000 light-years form the center, rotates about the galactic core (the galactic center harbors a compact object of very large mass, strongly suspected to be a supermassive black hole ) once every 220 million years.

Answer 2

Not exactly: the Sun is a part of the Milky Way, which is a galaxy, and like all stars in the galaxy the Sun is orbiting the center of the galaxy. Current thinking is that the center of the galaxy has a supermassive black hole (or more than one black hole), so technically the sun in orbiting around the center of the galaxy is probably orbiting a black hole.

Answer 3

There are gravitational forces between every particle of mass in the universe and every

other particle of mass. Since the Milky Way is a collection of 200 to 400 billion stars,

there is every probability that a mass in the neighborhood of the Milky Way is attracted

to it by a not-insignificant gravitational force.

Answer 4

it ti not symmetrical because it has an infinite amount of space