Alex Filippenko, Keck Observatory (IMAGE)

W. M. Keck Observatory

Alex Filippenko, Keck Observatory

Caption

Co-author Alex Filippenko, a UC Berkeley astronomer (right) with UC Santa Cruz Assistant Professor Ryan Foley (left), both of whom are longtime W. M. Keck Observatory users.

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© LAURIE HATCH

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This image is authorized for journalistic, educational, and personal uses only. For commercial uses, please contact Laurie Hatch for permission at lh@lauriehatch.com

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