[qam1]

far enough out, billions and billions of light years, you'll end up at your starting point.

If that's true then light from the Galaxies is doing the same thing and there isn't as many galaxies as we think. Instead of seeing billions of galaxies we are just seeing the same few galaxies over and over again. Remember galaxies are moving so by the time their light got back to it's starting point they are long gone. If the universe has been around a long time then the light would have "Looped around" many times. So instead of seeing billions of "Real" galaxies we are instead actually just seeing billions of "Echos".

[Indy Pendance]

That's true, it's still fun to speculate what's out there, how it works, etc. It would be so cool to be on that cutting edge of science. That's our next frontier.

[samtheman]

Instead of seeing billions of galaxies we are just seeing the same few galaxies over and over again. Remember galaxies are moving so by the time their light got back to it's starting point they are long gone. If the universe has been around a long time then the light would have "Looped around" many times. So instead of seeing billions of "Real" galaxies we are instead actually just seeing billions of "Echos".

Hey dude, like wow, and really man, the sky is wow like really up there and just think, it's like down below at the same time!

(Don't bogart that joint, my friend.)

[jennyp]

far enough out, billions and billions of light years, you'll end up at your starting point.

If that's true then light from the Galaxies is doing the same thing and there isn't as many galaxies as we think. Instead of seeing billions of galaxies we are just seeing the same few galaxies over and over again.

Earlier this year some team of scientists reported that this could not be true. It was because of some recent observations somebody had made. They also came up with a range of possible sizes for the universe.

(How's that for a detailed recollection? :-)

[Nowhere Man]

If that's true then light from the Galaxies is doing the same thing and there isn't as many galaxies as we think. Instead of seeing billions of galaxies we are just seeing the same few galaxies over and over again. Remember galaxies are moving so by the time their light got back to it's starting point they are long gone. If the universe has been around a long time then the light would have "Looped around" many times. So instead of seeing billions of "Real" galaxies we are instead actually just seeing billions of "Echos".

That theory was proposed in the 1920's, it's sort of like seeing the back of your head with light waves that go around the Earth. At one point, scientists thought the Universe only contained the Milky Way sometimes called "an Island Universe." One interesting theoretical question I pondered about is if I was driving my car at 100 MPH into the end of the Universe, assuming it has limits, would I wreck my car and my family need to scoop me off the wall of the Universe with a spatula? B-) Weird I know, but it is something to ponder.