(March 8, 2014 at 2:19 pm)Bittersmart Wrote: Really? Damn.
In layman's terms, could you explain it a little? I'm interested in science, but I don't have the extensive learning background, so I usually just go with what the pHD's say.
Apparently NASA is saying that if the geometry of space-time is flat the universe must be infinite.
What Alex is saying is that if the geometry of space is flat, that doesn't necessarily mean the universe is infinite.
A flat geometry would be like a sheet of paper with or without edges. Curved saddle shaped spacetime would be like that old asteroids arcade game were if you went off the edge of the screen you appear on the opposite side.
