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Review: The Ordinary Spaceman: From Boyhood Dreams to Astronaut
Review: The Ordinary Spaceman: From Boyhood Dreams to Astronaut
Full disclosure, I know Clay. His class of Astronaut Candidates (AsCans), the 1998 class, was the first AsCan group I taught. That was a…
Why planets move back and forth in the sky
Why planets move back and forth in the sky
We don’t really perceive depth when we look up at the stars and planets. They all appear to be moving across a flat plane. In the below…