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You are aware that the US's nuclear arsenal alone could wipe every human off the face of the earth, and make human life on earth impossible for thousands of years due to fallout?



You say...

Could you please provide me the passage and translation that states anything about extrasolar systems?



Ummm.... You said "Even at the speed of light it would take thousands of years.".
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I could easily kill a helpless baby. Since I don't I must not exist right?

Flawless logic..

Not with that attitude..



Alpha Centauri Bb is 4.3 light years from our sun. There is evidence a planet orbits this star, although this has (to my knowledge) not been scientifically confirmed....

You misunderstand the quote. Tyson is describing a "god of the gaps" argument. For instance we know the processes the result in lightning, no need to attribute lightning to Thor.

Similarly we...