Bert Ehrmann
Dangerous Universe has been Bert’s web playground since 1998 when personal web sites were a rarity rather than the norm.
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Doctor Who 50th anniversary special TV spot
http://youtu.be/7hRy2N2CMhQ…
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Winter Solstice Graphic
This graphic that shows the apparent movement of the sun across the sky throughout the year as well as the position of the sun during the equinoxes and solstices is very informative. Click on the g…