In a new optical illusion, dots appear purple in central vision but blue in peripheral vision. Here's how it works.
I got all sorts of crazy stuff mailed to me and I’m going to taste all of it. Will I get any of the flavors right? mostly ...
On November 2, 2000, NASA astronaut Bill Shepherd, OCE ’78, SM ’78, and Russian cosmonauts Sergei Krikalev and Yuri Gidzenko ...
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