Does everything in the universe orbit everything else?

Question

Moons orbit planets, planets orbit stars, so do stars orbit something else within their galaxy? Do galaxies orbit something we havent discovered yet? Where does it end?
My God ive just thought myself silly.

Answer 1

The galaxies in our local group coorbit. Andromeda and the Milky Way have collided before, and will collide again. You can find some really net images of colliding galaxies on the internet.

But that is about it. Super clusters of galaxies do not appear to coorbit one another. Our local group of galaxies is moving towards a great attractor--a super mass of galaxies some hundred million light years away. We're not really in orbit about that mass--it is doubtful we would have made a single pass around in during the 13.7 billion year history of the universe. As other posters noted--the galaxies are just moving apart (Hubble red shift).

Also as other posters noted--the stars in our galaxy do orbit the core. It takes our earth 1 year to orbit the sun. It takes our sun 200 million years to orbit the core of the galaxy. As it does so, it makes a sinusoidal curve through the plane of the Milky Way. So our sun's orbit is not a neat circle or ellipse.

Answer 2

Everything in the galaxy orbits the center bulge of that Galaxy. We have not yet discovered if Galaxy orbits something else. But, note that everything in the universe is on move.

Answer 3

Yes, stars and the planetary systems orbit some other points, and all because of the original spiral motion of the gas clouds from which they formed. Whether the galxies spin around themselves and also orbit around some other thing, is not clear to me at this time but is plausible.

Answer 4

If what Science says is true, probably everything orbits something.

Einstein said if you go out into space in a rocket and travel on and on and on you eventually return to the same place you left.

Now gamma rays travel (we think) in a straight line and they head out in all directions and they are what is pushing the expanding universe outer edge.

For the orbiting theory to be correct they eventually MUST bend and fall back to the point of origin.

Answer 5

Our galaxy is in orbit around it's center. Probably a black hole. It takes the sun about 250 million years to complete one orbit.

Answer 6

Not necessarily. Galaxies do move though - the Milky Way and Adromeda galaxies are due to collide eventually.

There are some celestial objects that move along a parabolic trajectory. For example, certain comets and asteroids have open trajectories and could/will pass by the earth once and only once and never return.

Answer 7

I've heard some planet was still and not moving or orbiting from its star!

Answer 8

Planets revolve around stars. Stars revolve around galaxy centers. However, the current theory for galaxies is that they're moving away from each other, not revolving around the universal center.

See this link for more info:
http://en.wikipedia.org/wiki/Metric_expansion_of_space

Answer 9

Perhaps everything orbits around God?

Answer 10

Not Necessarily