Quote:
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Light can come from different places in the universe. One might be bigger because it was directly reflecting the sun. The other one might be smaller because of light reflecting off some other planets.
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What do you think is reflected in the visor of the astronaut in the first part of this clip?
http://www.youtube.com/watch?v=wdMvQTNLaUE&mode=related&search=
And this one?
http://www.youtube.com/watch?v=fSHFekcXhNQ&mode=related&search=
What do you think is reflected in the visor of the shuttle astronaut?
http://a52.g.akamaitech.net/f/52/827/1d/www.space.com/images/ig_65.13_sts51i_ox.jpg