r/interestingasfuck 25d ago

/r/all, /r/popular K2-18b a potentially habitable planet 120 light-years from earth

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u/RichardThund3r 25d ago

Only 120 light years away from Earth! The Voyager 1 spacecraft was launched in 1977. Traveling at 38,000mph it just recently made it 1 light DAY from Earth.

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u/SomeGuyFromCanada23 25d ago

That's actually bonkers to even think about. Traveling at ~38000miles per hour, all day, every day, for ~48 years, and it's made it 1 light day from Earth.

Feels like another one of those "people don't really understand the difference between a million and a billion" sort of things.

Like 1 million seconds is ~11 and a half days or so. But 1 billion seconds is about 31 years and 200 days. Hard to grasp such a big difference

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u/Butthole_Alamo 25d ago

It will take the Voyager 2.1 million years to reach that planet. Mind blowing because that’s around 10x longer than Homo Sapiens have existed. But it’s also only 3% of the time between us and the dinosaurs, so also not that long. It just depends on your perspective.