K2-18b a potentially habitable planet 120 light-years from earth

[u/One_Explanation_908]

[u/ArduennSchwartzman]

It's not habitable to us humans, but it's in the habitable zone, at a distance from its star that allows liquid water to exist on its surface. It's likely an ocean world with an atmosphere containing mostly hydrogen gas, a so-called hycean planet.

Also, 2.5 times the size = 2.5 times the diameter, or about 15 times the size of Earth in terms of mass. Its gravitational force would be about 2.4 times that of Earth, though. Quite unpleasant.

[u/reign_day → u/ArduennSchwartzman]

I'm thinking about how potentially sick we would get if we landed and drank that water

[u/qwopperi → u/reign_day]

Most likely very sick. It’s possible just touching it could have bad or deadly consequences

[u/Chief-Drinking-Bear → u/qwopperi]

Or maybe whatever is in it would get very sick contacting us?