Hubble Telescope Zooms In on the Biggest Comet Ever Spotted - The New York Times

The space observatory helped scientists make a more precise measurement of the comet, which has a mass of 500 trillion tons and an appearance like burned toast.

Last year, scientists announced that they had discovered a colossal comet lingering just inside Neptunes orbit. They estimated its icy core to be between 62 and 125 miles long, based on its brightnes… [+1182 chars]

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