Why do Earth and Saturn have almost identical surface gravity?

Saturn and Earth have nearly the same surface gravitaional acceleration because Saturn is much larger and less dense than Earth. read more

Saturn and Earth have nearly the same surface gravitaional acceleration because Saturn is much larger and less dense than Earth. Saturn is about 9 times the diameter of Earth, but is composed mostly of hydrogen, helium, and ices of other low-mass volitiles. read more

There was not enough gravity to hold them down and they escaped into space. Secondary atmosphere: Gases from volcanic activity (outgassing) released N2, CO2, CH4(methane) , NH3 (ammonia), H2O vapor, sulfur dioxide. As Earth's surface temperature fell and the water vapor condensed, oceans formed. read more

Finally, the mass of Saturn is 95 times the mass of the Earth. One interesting comparison between Earth and Saturn is density. Earth is the densest planet in the Solar System, while Saturn is the least dense. The density of Earth is 5.52 g/cm 3, while the density of Saturn is 0.687 g/cm 3. In other words, Earth is 8 times as dense as Saturn. Another region where Saturn and Earth are similar is gravity. read more