Dedicated to the safe observation of the
A Total Solar Eclipse is Coming to the United States!
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2017 Eclipse Blog / FAQ



February, 2017 Archives

Why does the eclipse go from West to East?

The Sun and Moon both appear to “rise” in the east, and “set” in the west. But as you can see in our video of the Moon’s shadow sweeping across the USA, you see that the shadow plainly travels from west to east across the country!

This is a … Read More »



Magnitude vs. obscuration?

Whenever eclipse geeks are talking about their calculations, they always need to make sure they are careful to distinguish as to whether they’re talking about “magnitude” or “obscuration”. In case you’d like to understand this, too, here is a quick explanation.

I’m going to use the word “percentage” below, … Read More »



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