If society needs further proof the earth is round, here you go.
Got kids who will be watching the eclipse? Here’s some history and teaching lessons about the phenomenon from Fraknoi:
You’re looking at the shadow of our planet and that’s kind of cool because most of the time the earth’s shadow – which is black like all good shadows – falls into space, which is black, so we can’t see it. It’s completely wasted because there’s nothing to contrast it with. But during this time, we see the shadow of the earth on the full moon. So first of all, that’s pretty cool.
But then the ancients began to think about this, saying the shadow of a tree looks like a tree, the shadow of my little brother looks like my little brother. So here’s the shadow of the earth and it’s round. And if it’s just once you see it round, you might say well it’s like a pizza plate — it’s really flat and we’re seeing the round part.
So more than 2,000 years ago, the ancient Greek thinkers already figured out from this simple observation that we must live on a round planet. That got forgotten in the Middle Ages, and there are rappers today [here’swho’d like you to forget it, but we’re pretty sure now that the earth is round. This is direct evidence the kids can find out themselves.
People gather to view a lunar eclipse of the first blood moon of the year in the hills of Oakland in May, 2022.
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