By Charles Arthur
Source : The Independent
Source : The Independent
At first they thought it was flat. Then that it was shaped like a football. But now, scientists believe the universe could be shaped like a flat-sided trumpet.
That would lead to strange effects in some parts of the universe, where time and light would be so curved that you could see the back of your own head. Also, a long-held theory about the universe - that it looks much the same anywhere - would have to be abandoned. And finally, the universe would be finite, rather than extending in every direction forever.
