Earth is hit with about 1200W/m2 in radiation from the sun. What's the surface area of a sphere with a 150 Billion meter radius?
Got it; 2.83x10^23 m2, so suns power should be in the ballpark of 3.5x10^26 Watts. Assuming some 100 Billion stars of standard sun size in our standard galaxy and a 100 Billion standard galaxies, you should be able to handle the entire Christmas light show of the universe with a mere 10^48 Watt give or take.
http://www.popsci.com/sites/popsci.c...?itok=iGwulEsM
Not too bright as 7th trump constantly reminds me...

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