Youtube activity of "Echo Sierra" (@SignalCorps1) on "The Secrets of the Universe" channel.
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UCuw-Ec-Ai9fpFbYpQF_OM_Q
Commenter youtube id
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Echo Sierra
Commenter name
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@SignalCorps1
Commenter name id
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"We Are Living Inside a Huge Cosmic Void. There's the Problem!"
Comments by video
"Why Is This Number The Greatest Unsolved Problem In Astronomy?"