Hubble Looks at a Comet

The Hubble Space Telescope photographed Comet 46P/Wirtanen on 13 December, when the comet was roughly12 million km from Earth. In this visible-light image, the comet’s nucleus is hidden in the center of a fuzzy glow from the comet’s coma, the cloud of gas and dust that the comet has ejected because of heating by the Sun during the pass through the inner Solar System. The blue color was applied to the image using to high-resolution grayscale exposures acquired from the Hubble’s Wide Field Camera 3.

Image Credit: NASA

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