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Planetary Science

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WORKING FOR PEANUTS  NASA’s New Horizons spacecraft is racing toward a rock in the Kuiper Belt called MU69. Early reconnaissance suggests that the object might be shaped like a peanut (as seen in this artist’s illustration), or could be two separate bodies.

Jupiter

HIDDEN DEPTHS  Jupiter’s Great Red Spot (left in this image from NASA’s Juno spacecraft) extends down into the planet’s atmosphere at least 350 kilometers, as far as Juno can see.

Hunga Tonga-Hunga Ha’apai

BABY PICS  Scientists are keeping an eye on the rates of erosion of volcanic ash on Earth’s newest island, called Hunga Tonga-Hunga Ha’apai.

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