TEDxSF - Dr. Alex Filippenko - Dark Energy and the Runaway Universe
21:23
Added: 1 year ago
From: TEDxTalks
Views: 2,128
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  • My astronomy prof in 1995. I see he's still awesome.

    sirmolio 2 months ago

  • lol lactose intolerance ftw

    danxiie 9 months ago

  • Wow¡¡¡¡

    angelsamael666 1 year ago

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