Facebook CEO Mark Zuckerberg attended the eighth-annual Breakthrough Prize Ceremony on Sunday night, where he rubbed elbows with musician Lenny Kravitz, actor LeVar Burton, and Google cofounder Sergey Brin.

Zuckerberg and his wife, Priscilla Chan, both attended the event, which is referred to as the "Oscars of science."

Zuckerberg presented awards and smiled for photographers amid increasing scrutiny over recent decisions by Facebook not to fact-check political ads.

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Facebook CEO Mark Zuckerberg has had a rough few weeks.

He had a rocky day in late October testifying in front of Congress, where he spent hours getting lambasted by a bi-partisan committee of politicians.

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