The 365 Days of Astronomy Cheap Astronomy - Implausible Engineering, Episode 6: Lasting the Distance
Hosted by Steve Nerlich.
Immortality is hard work.
Episode 6a: Staying Switched On
It's difficult to achieve immortality unless you also achieve invulnerability, since even if you don't age or
get sick you can still die from a natural disaster, or a murder, or whatever. Indeed, the longer you live
the more likely some unexpected calamity may come your way. So, if your only immortal up until the
point that something goes wrong and you die, then you're not really immortal.
Episode 6b: Hopping Universes.
The day is coming when our Universe starts winding down towards heat death and our by-then close-to-
immortal descendants will need to find a fresh young Universe to continue in. After all, here we living in
a Universe that apparently popped of nowhere, quite literally, since the whole idea of a Universe is that
it contains spacetime, so whatever nothingness that it did pop out of had neither space nor time
dimensions.
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