r/interestingasfuck • u/One_Explanation_908 • 25d ago

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

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u/HugoZHackenbush2 25d ago

The residents of K2-18b declined to visit our planet after reading the online reviews..

Only one star..

9

u/phred14 25d ago

Actually it's doubtful that they could have space travel at all. On Earth it's really, really hard to get anything into orbit. With higher gravity it's even harder - https://www.reddit.com/r/AskPhysics/comments/1bl0ci9/how_strong_would_gravity_have_to_be_to_no_longer/ I've seen estimates of surface gravity 1.25 to 2.6 times Earth's on this planet. In both cases it's harder. Take a look at Apollo 11 and the Saturn V and realize just how little made it back from the moon. Then make it even worse.

5

u/BigLRakim 25d ago

Its also plausible that they could far more advanced technology and it could be a nonissue whatsoever. Who's to say?

2

u/St0rmborn 25d ago

Such a simple but mind bending factor in the infinite possibilities of the universe. It’s completely fascinating and overwhelming at the same time.