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An unusual object in the asteroid belt is, in fact, two asteroids orbiting each other that have comet-like features. These include a bright halo of material, called a coma, and a long tail of dust. Learn more: go.nasa.gov/2xRB7ju ...

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Wave to our OSIRIS-REx spacecraft during its closest flyby of Earth on Sept. 22! Over the course of several days, observatories and amateur astronomers have a unique opportunity to view the spacecraft as it approaches to slingshot around our planet. Get the details: go.nasa.gov/2jMvZXK ...

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Of the Antarctic glaciers that experienced the most accelerated melting between 2008 and 2014, the most likely cause is an observed influx of warm water into the bay where they're located. Learn more: go.nasa.gov/2xRzSRm ...

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