Bad Astronomy -
3 Jan 2016 16:00
As the Earth orbits the Sun, it plows through a lot of debris. Over a hundred tons of material burns up in our atmosphere every day on average; random bits of stuff dispersed over time from comets and asteroids. Sometimes, though, our planet moves through the debris trail of a comet, tiny grains of rocks and dust sloughed off by previous passages of the comet as it too orbits the Sun. When that happens, we get a meteor shower. Because these happen when the Earth is at a certain point in its orbi...
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