Gravity on other worlds compared with Earth
Drop a ball, jump or throw on Earth and on another world at the same moment and watch the difference. The numbers below the view are exact, and you can see what you would weigh there.
Moon: gravity of 1.6 m/s², 0.16 times Earth’s.
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| Earth | Moon | |
|---|---|---|
| Surface gravity | 9.8 m/s² | 1.6 m/s² (0.16 ×) |
| Time to fall | 1.43 s | 3.54 s |
Moon: with a mass of 70 kg you would weigh what 11.4 kg weighs on Earth, a force of 112 newtons.
Gravity values are NASA’s, measured at the equator and including the effect of the world’s rotation. The motion is shown without air: on Earth a real ball would be slowed down a little, and in the much denser air of Venus a lot.
Gravity on every world
| World | Surface gravity | Compared with Earth | A 0.5 m jump becomes |
|---|---|---|---|
| Moon | 1.6 m/s² | 0.16 × | 3.06 m |
| Mercury | 3.7 m/s² | 0.38 × | 1.32 m |
| Mars | 3.7 m/s² | 0.38 × | 1.32 m |
| Uranus | 8.7 m/s² | 0.89 × | 0.56 m |
| Venus | 8.9 m/s² | 0.91 × | 0.55 m |
| Saturn | 9.0 m/s² | 0.92 × | 0.54 m |
| Earth | 9.8 m/s² | 1.00 × | 0.50 m |
| Neptune | 11.0 m/s² | 1.12 × | 0.45 m |
| Jupiter | 23.1 m/s² | 2.36 × | 0.21 m |
| Sun | 274.0 m/s² | 27.96 × | 0.018 m |
A jump of half a metre on Earth, with the same push from your legs on each world. For the giant planets the 1-bar level, for the Sun the photosphere.
How it works
Both balls start the same way, and only gravity changes. A drop from a height h takes the square root of 2h/g seconds. With the same push from your legs, the height of a jump grows in proportion to 1/g, so on a world with a sixth of Earth’s gravity you jump six times as high. A throw at 45 degrees goes v²/g metres far. Your mass is the same everywhere, and your weight is your mass times g.
Surface gravity: NASA Planetary Fact Sheet and Sun Fact Sheet. Data sources