Follow Slashdot blog updates by subscribing to our blog RSS feed


Forgot your password?

Submission Summary: 0 pending, 2 declined, 0 accepted (2 total, 0.00% accepted)

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).


+ - Question about the speed of light.

Submitted by Derblet
Derblet (897683) writes "I'm not one to question the currently accepted wisdom that nothing can travel faster than light, but I do have a question that I hope someone can answer. I'm sure it's been asked before, but please indulge me.

Suppose that you have two objects at opposing 'ends' of the Universe (or, if the Universe 'bends' in on itself, two objects that are a very, very, long linear distance apart). Now, since the Universe is meant to be expanding, it seems to me that two things so far apart would be likely to move away from each other at a very great speed indeed. Given the size of the Universe, might not this speed be greater than the speed of light?


1. The speed of light sets a limit on the expansion, and the expansion is in fact tiny.

2. Something happens to time at such great distances.

3. I don't know, something else.

Go easy on me — I often read about this stuff, but I never really understand it."

You scratch my tape, and I'll scratch yours.