Quoting George Murphy <gmurphy@raex.com>:
..
> which will eventually collapse. k = 0 is like the case of a rocket sent away
> from the earth at exactly escape velocity - it would in the limit creep out
> to infinity at a speed approaching zero but would never fall back.
>
> Both inflationary cosmology and present observations indicates that our
> universe is, on the average, spatially flat. But it's possible that it's a
> closed (spherical) space with an extremely large radius of curvature.
>
> Shalom
> George
Responding to the part I could understand:
I thought observations made in the late 90s led cosmologists to the surprising
discovery that the expansion was accelerating --hence the need for a
mathematical factor (dark energy?) to counteract gravity. Have new conclusions
in subsequent years brought the flat model back in favor?
--Merv
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Received on Tue May 6 11:39:41 2008
This archive was generated by hypermail 2.1.8 : Tue May 06 2008 - 11:39:41 EDT