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colinha

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colinha

Human Chromosomal Number

It has recently been found that the reason that humans have two less chromosomes than other great apes is due to a merging of two chromosomes into one in the past. So we have 23 pairs not 24 as in...
15:47 Thu 24th May 201215 answers, last by Jonathan-Joe 09:38 Thu 28th Jun 2012
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eltelioni

Nearby planets - travel to and colonisation of

Continuing here because colinha's question is closed. (Why?) I don't agree that this has been done to death. Although there are practical difficulties with interstellar travel I see no objection to...
03:31 Sat 02nd Jan 201015 answers, last by Old_Geezer 12:16 Mon 11th Jan 2010
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colinha

Travel to Nearby Planets

How long would it take from the frame of reference of the crew to get to a star system 40 light years away at a constant 1g accelleration. Does time dilation make colonisation a real possibility or...
12:53 Fri 01st Jan 20103 answers, last by colinha 00:14 Sat 02nd Jan 2010
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nix-j-c

evolution/technology.

i reckon that humans have stopped evolving because of technology ie medicine allowing many more people to survive rather than survival of the fittest. but if technology was developing slower than the...
16:26 Thu 30th Apr 20097 answers, last by mollykins 16:16 Sat 23rd May 2009
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colinha

Electrons and Quarks

Electric force charges on quarks are +2/3 and -1/3 for up and down variants. The charge on an electron is -1 Quarks balance in groups of 3 to give a net charge of +1 or zero in nuclei in atoms. The...
15:45 Mon 06th Apr 200910 answers, last by jake-the-peg 17:23 Tue 07th Apr 2009
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colinha

Dark Matter/Energy? Just leaky gravity?

According to some variants of String Theory, we are living on a 4 dimensional membrane in a 10 dimensional bulk space. Gravity appears weak because it is the only force that leaks out of our membrane...
20:14 Tue 31st Mar 20099 answers, last by WaldoMcFroog 09:37 Thu 02nd Apr 2009
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colinha

Size of the actual universe??

The size of the observable universe is bounded by the distance that light has had time to travel to us. An observer in the Andromeda Galaxy would have a slightly different observable universe to ours...
12:06 Fri 13th Feb 20098 answers, last by mibn2cweus 12:01 Sun 15th Feb 2009

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