
UFOs - What do we know?
5 Live Science Podcast
00:00
The Evolution of Time and Space
If there is life somewhere that's not in our immediate vicinity, how would they get to us? The conventional way might be some super-fast rocket. They could also slingshot themselves around the universe using black holes or wormholes. I'm not sure that's true if we're able to just go by the laws of physics.
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