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The optical size of the moon is no bigger than. A hole punch held at arms length? Will have to ponder that..
www.guardian.co.uk/science/2013/jan/27/20-human-body-facts-scienceI particularly like the one about Space Trauma (no. 6) which told me how long I could survive in a vacuum.No.12 was about the useful DNA our body uses for reproduction, yet we're not quite sure of it's everyday use, yet.No.14 was about eyelash mites. Yuck.No.16 was about our sensory tally, we have more than five senses. Shut your eyes and now touch your nose... Now tell me what sense you used...
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