O.R.S.A

VISITOR BOOK

Please add your name, location and what Space or Science you do in our Vistors Book – via comments


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1 Comment so far

  1.   Jon Butterworth on February 9th, 2016          Reply

    Looks like a great blog, and good to see you have been looking at light, colours and how they mix up. Did you know we tell what stars are made of because of the particular colours of light they emit (spectroscopy)?

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