This week’s Cosmic Quiz question comes from James Sylvester, who asks,
“If the speed of light is the highest attainable speed, why can’t it escape a black hole?”
First, a few words about the speed of light, which is indeed the fastest speed attainable through space. How fast is it?
This week’s Cosmic Quiz winner is Greg McMurray, who asked:
How fast is the Earth moving relative to everything else?
Let’s break it down.
The first motion of Earth that we’re all familiar with is rotation – the movement of the Earth that gives us day and night. Here in Salt Lake City at about 40 degrees north [...]
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