Comments on: Is There Anybody Out There? https://briankoberlein.com/2015/04/27/is-there-anybody-out-there/ Brian Koberlein Thu, 21 Feb 2019 15:22:39 +0000 hourly 1 https://wordpress.org/?v=5.0.3 By: Ella https://briankoberlein.com/2015/04/27/is-there-anybody-out-there/#comment-2285 Tue, 28 Apr 2015 14:07:36 +0000 https://briankoberlein.com/?p=4737#comment-2285 Maybe they live inside the planets…..

]]> By: Emmet Ford https://briankoberlein.com/2015/04/27/is-there-anybody-out-there/#comment-2282 Tue, 28 Apr 2015 03:24:48 +0000 https://briankoberlein.com/?p=4737#comment-2282 Maybe every civilization in the cosmos eventually gets its ticket punched by a gamma ray burst. How wide across is that beam, I wonder, at 7000 light years? How far into the cosmos does a civilization have to spread in order to avoid extinction by a single event?

Maybe advanced civilizations use energy very efficiently.

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