Jupiter. Thanks to its massive size (almost 320 more massive than Earth), the gravitational attraction of the gas giant is second only to the sun's. However, there's a problem: Jupiter has no surface where you can weigh yourself. Scientists define the acceleration due to gravity on Jupiter with its value on the planet's cloud top, where: g(Jupiter) = 2.34 g = 22.96 m/s². On Jupiter's cloud, you'd weigh more than twice what you weigh on Earth! Read more