Ahead of the peak of the Perseid meteor shower, we're re-airing our first episode with Scientist in Residence Regina G. Barber. In it, Regina and planetary scientist Melissa Rice explore all things shooting star. They talk about the different types, where they come from and what they actually are (hint: not stars).

Learn more about viewing the Persieds in the next few days here: Get ready to look up in the night sky at all those meteor showers.

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