Cosmic Queries: Until the End of Time, with Brian Greene (Re-Release)
StarTalk Radio
The Importance of Space Travel
If we were to send a group of our species out into space, it really would be within their lifetime that they'd be able to go arbitrarily far. But in practice, you want to pass by stars, not the void of empty intergalactic space. You could even have an exhibit on your journey where people back on Earth can see what's happened and how humans came to be there.
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