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Questions tagged [interstellar-travel]

Questions regarding travel on a cosmic scale, from one star to another.

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Breakthrough Starshot's 100 Gigawatt laser array - what's the current thinking how this might work?

In the article Breakthrough Starshot tricks out massive telescope for planet hunting there is casual mention of a "phased array of lasers in the 100GW range" that will propel a gram scale spacecraft ...
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Did anyone suggest theories on the sounds voyager 1 captured from 2012-2013?

I was watching this on the JPL Youtube channel and it doesn't have much context other than 2 minutes of footage, and cuts to slides with some information, but not a lot of information. I'm wondering ...
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How much D2O does it take to power an interstellar generation ship O'Neill cylinder for 10,000 years?

Did I do the math right? I'm using full precision but write only 2 sig figs. https://en.wikipedia.org/wiki/Nuclear_fusion#Criteria_and_candidates_for_terrestrial_reactions ...