<div dir="ltr">It is possible, that the astronomy (physics) does not provide a big enough number in the first place.<div><br></div><div>Yes, there may be 10^23 stars in the visible universe. But a star is not enough. Must be a much more peculiar one, that once thought it has to be.</div><div><br></div><div>What is known as the faint sun paradox - why was so warm on Earth back when our Sun was much fainter - has a strange answer. Be cause our planet rotated faster!</div><div><br></div><div>Yes, that's right. A faster rotating planet is warmer! Despite the common knowledge, of course.</div><div><br></div><div>Gradually this rotation slowed, just as the Sun got warmer in its natural cycle. Quite a synchronicity was needed!</div><div><br></div><div>And it is very likely that then the Universe was not able to provide a very big number of systems capable of life. Biology had nothing to begin with.</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Apr 1, 2015 at 7:28 PM, John Clark <span dir="ltr"><<a href="mailto:johnkclark@gmail.com" target="_blank">johnkclark@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">
<p>On Mon, Mar 23, 2015 BillK <span><<a href="mailto:pharos@gmail.com" target="_blank"><span>pharos@gmail.com</span></a>></span> wrote:<br></p>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">> This universe seems to be 'designed' for life creation so that primitive life appears wherever there is a chance.</blockquote>
<p>Maybe not. We only have one example to examine and it's true that life started on Earth almost as soon as the Earth formed 4.5 billion years ago, but that could be freakishly early. This isn't just any old planet that supports life, it supports intelligent life. If it had taken just 800 million years longer for life to get started then right about now the sun would start to get off the main sequence and would get so hot that complex organisms could no longer exist on the Earth.</p>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">> Advancing to intelligent life may well require another chain of unlikely events,</blockquote>
<p>The sort of cells that all complex life is made of, Eukaryotic cells, evolved about 2 billion years ago and some think that was even more unlikely than the origin of life itself.</p>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">> but the universe is a pretty big place.</blockquote>
<p>It all comes down to which can generate bigger numbers, astronomy or biology. </p>
<p><br></p>
<p> John K Clark</p></div>
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