Bad Astronomy | Hubble image of UN271, biggest comet ever se

Hubble Space Telescope images largest known comet; C/2014 UN271 has solid nucleus estimated at 137 km in diameter.

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, Alyssa Pagan Stsc , Dark Energy , Hui Macau University Of Science , Dark Energy Survey , Trans Neptunian Object , Oort Cloud , Hubble Space Telescope , Man To Hui , Macau University , David Jewitt , Alyssa Pagan , Zena Levy ,