'Cosmic ghost' discovered by volunteer astronomer

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Hannys Voorwerp and IC 2497. Credit: Dan Smith Peter Herbert Matt Jarvis the ING
Hanny's Voorwerp and IC 2497. Credit: Dan Smith, Peter Herbert, Matt Jarvis & the ING
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When Yale astrophysicist Kevin Schawinski and his colleagues at Oxford University enlisted public support in cataloguing galaxies, they never envisioned the strange object Hanny van Arkel found in archived images of the night sky.


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