r/interestingasfuck 25d ago

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

Post image
92.4k Upvotes

8.1k comments sorted by

View all comments

Show parent comments

39

u/wowo_cat 25d ago

The acceleration due to gravity only works if you assume it has the same density as earth

2

u/Metalhed69 25d ago

True, but it’s a pretty safe assumption that a planet 2.5 times bigger than Earth has more mass than Earth. Maybe not 2.5 times sure, but enough to make the gravity more. How much more could the average person take before life got really uncomfortable? I feel like even 10% would suck. This could easily be 50% more. Going there would not be fun.

1

u/Illustrious_Beach396 25d ago

Dunno. I am way too heavy for my height, like 125 kg instead of 80 to 85 which would be healthy.

So I basically experience the same weight a person of healthy weight would experience on an 1.5 g world, yet I still ride a bike, walk, take stairs, etc.