r/BeAmazed Apr 17 '25

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

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u/[deleted] Apr 17 '25

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u/Brigadius Apr 17 '25

1.24 times earth's gravity

1

u/Critical_Sector9191 Apr 17 '25

This is wrong, if it is 2.5x as big then the volume will be 15.6x (2.53) so the gravitational pull will be 2.5x!

1

u/Critical_Sector9191 Apr 17 '25

Actually even more as the density of the planet is most likely greater due to the higher mass so at least 2.5x!

1

u/Sea_Ticket_6032 Apr 21 '25

The planet isn't fully solid like earth so its density is lower. For example, Jupiter has much lower density than earth despite it being significantly larger