Thursday, February 14, 2008

Gregg Easterbrook reports from an article in the journal of General Relativity and Gravitation: "3 trillion years from now, the universe will have expanded to such vastness, and its edges accelerated to such speeds, that an observer in our galaxy, the Milky Way, will not be able to see any other galaxy. At that far date, Krauss supposes, from the standpoint of the Milky Way, it would appear that our galaxy was all that existed. The ancient Greeks believed our galaxy was all that existed, so over the very long term, their view might come back into fashion!

Krauss further hypothesized that once the universe is so spread out the galaxies can't see each other, there no longer would be any evidence of the Big Bang. Humanity, Krauss contends, is fortunate to have popped up relatively early in the life span of the cosmos, which appears to be about 14 billion years old -- less than 1 percent of a 3-trillion-year period -- because the firmament is young enough to remain rich with clues as to how the heavens came into being. Think what might happen to an intelligent species arising 3 trillion years from now, Krauss continued. Able to perceive only its own galaxy, that species might not realize a larger universe exists, and might be perplexed about what force could have formed a single cluster of stars floating in an endless void. My speculation: The beings in this scenario would conclude that all existence was created for them personally, which is roughly what our ancestors believed."

Riyaad, you always say I give you nothing to talk about.

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