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Two Odd Balls: Charon and Arrokoth
Journey with us to the far reaches of the outer solar system where we take a closer look at two small objects explored by New Horizons: Pluto's moon Charon and the Kuiper Belt Object Arrokoth. Charon's atmosphere goes through dramatic seasonal pulses that may explain its odd, reddish polar cap, while Arrokoth has the density of a fluffy snowbank 30 km long. There's some crazy stuff out there.