[Phoenix-D]

Originally posted by Grandpa Kim:
If the universe is infinite, then there are an infinite number of earth-like worlds, and infinite number of alien civilizations, and the sky would be not be blue but the color, brightness and intensity of your average sun 24/7. Half of infinity is still infinity!

Frankly, we could not survive an infinite universe. Of necessity the temperature would be far beyond what our bodies could stand. I mean, we are talking thermonuclear temperatures.

Since this is not true, the universe is not infinite.

Yep, centillion is huge, but it's pretty miniscule next to infinity.

Not true at all. Look at Hubble's Deep Field photographs sometime- you see entire galaxies that aren't even visible to the naked eye. Infititely sized means infinitely far away, as well. And heat? Do you feel any heat from the stars at night? Didn't think so, and those are the closest ones. Heat does trail off the further you get from an object.