If we're willing to go back to when the Universe was just 0.092% its present size, we'll find a Universe that's 1089 times hotter than it is today: around 3000 K.

The unobservable Universe, on the other hand, must be at least 23 trillion light years in diameter, and contain a volume of space that's over 15 million times as large as the volume we can observe.

"The Universe in a Nutshell," by Stephen Hawking, Bantam: 224 pp., $35; "Our Cosmit Habitat," By Martin J. Rees, Princeton University Press: 206 pp., $22.50 At Home in the Universe - Los Angeles Times ...

The standard model, although successful in the explanation of cosmic microwave background radiation and the large-scale structure of the universe, relies on unobservable entities ... the would-be ...

Today's Bloggingheads dialogue features me and writer John Horgan -- I will spare you a screen capture of our faces, but here is a good old-fashioned link.John is the author of The End of Science, in ...

Why are there so many paradoxes in our scientific understanding of the universe, and can we rebuild our system so that they're eliminated? That's what The Unobservable Universe sets out to work ...