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Comment Re:Attractive proposition (Score 1) 288

I've always been inclined to dismiss the existence of infinities outside of mathematics, but it's starting to look like the universe might be infinite in extent, and probably is infinite in the forward direction of time, so I'm starting to entertain the possibilities.

Though the idea of a universe infinite in extent arising from a point or a very small space is kind of hard to wrap your head around.

Comment Re:But... (Score 1) 288

OK, these guys are probably far smarter than I'll ever be, but... the universe clearly isn't staying at a finite size, and playing the universe's expansion in reverse would imply that it started at a single point. How do they account for this? I even went as far as to read the article, but it wasn't mentioned.

Actually, if you assume that expansion plays backwards with no change in rate you pass through a point and then into negative size. Probably we should not assume that expansion can be extrapolated backwards past some point, which could as easily be a non-singularity as a singularity.

Comment Re:So they are back to steady state? (Score 1) 288

1) Some creationists claim that the big bang proves scripture is true.

2) Some creationists claim that the bag bang cannot be true, because it contradicts scripture.

3) You're the first person I've ever heard to claim that the big crunch matches scripture, and frankly I don't see where you pulled that from.

Conclusion: Scripture means whatever you want it to mean.

Also, do you know of any scientist other than Hoyle who tried to dismiss the big bang as religion? Hoyle, who was still pushing his steady state theory a generation after everyone else recognized that the evidence pointed to a big bang, and coined the term 'big bang' to denigrate the competition to his own precious theory?

Finally, I'm not sure how this qualifies as "going back to the old model", since there's still a big bang. It just doesn't start with a singularity in this proposed model. Scientists have asked about "before the big bang" for decades. In fact, they now seem to associating 'the big bang' with the beginning of the inflationary era, if I understand what I read correctly.

Comment Re:Dark matter (Score 1) 212

Actually, I think physicists have speculated that gravity is the weakest force because some of it leaks out of our brane. Stands to reason that some would leak in from other branes to. Mutual attraction means matter clumps up "in the same place" on nearby branes. Dark matter is dark because only its gravitation leaks in; other forces and interactions are constrained to its own universe.

The amount of dark matter - or rather, the amount of gravitational energy leaking in - might tell us how many branes we are "adjacent to" in the bigger scheme of things.

Comment Re:Who remembers Global Cooling? (Score 1) 958

Whereas in the real world, if you look at published papers rather than magazine articles, scientists predicted warming over cooling by a 6:1 ratio during 1965-1979.

Also, for those who didn't understand greenhouse gasses, cooling would be a natural supposition since we had been in an interglacial for about as long as the previous time. Turns out that interglacials aren't as clockwork as people used to think, but some scientists still think there's an end-interglacial forcing that partly counteracts the anthropogenic forcing in the opposite direction.

Please add these to your list of facts to ignore.

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