Super-Earth Discovered In Stars' Habitable Zone

seven times more massive than Earth...

so much for their early space program

Assuming 2 planets have equal densities, Mass increases proportional to R^3, but gravity is proportional to the inverse squared of the distance.... As a result, surface gravity increases only linearly with the radius.... in this case, the planet would have 1.9 times the radius of the Earth if it's the same density.

Earth has a very high density actually at 5.5g/cm3, it's actually the densest planetary object in our solar system. Most terrestrial objects are closer to 2 and the larger ones tend to be 3. It is entirely possible that it'll have a comparable surface gravity.

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/2PkmL8M0rC4/super-earth-discovered-in-stars-habitable-zone

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