The late Carl Sagan talks about time travel, and the use of black holes and wormholes to travel across the universe in this excerpts from his appearance on BBC Horizon’s The Time Lords (1996).
Carl Sagan On Time Travel (From BBC’s The Time Lords)
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I wonder what Carl would think of Facebook…. I popped on for a quick update at a few minutes ago at 6pm, just looked at the clock and its 1 am.