Did you know that a person weighing 75 kg on Earth weighs just under 13 kg on the Moon?

On Earth, a person weighing 75 kg would weigh only about 13 kg on the Moon. This difference is due to the Moon’s much weaker gravity compared to Earth. The Moon’s mass is about 1/81st that of Earth, and its smaller radius means the gravity is only about one-sixth as strong as Earth’s gravity.

Weight is determined by the gravitational force acting on a mass, and because gravity on the Moon is much lower, a person feels significantly lighter there. This difference in weight has practical effects, such as making it easier to jump or carry heavier loads. This phenomenon is well demonstrated in NASA’s videos of the Moon landings. Astronauts walking normally appear to bounce or hop due to the reduced gravity.

Since human muscles are accustomed to Earth’s gravity, being on the Moon feels like floating, allowing one to jump easily, both high and far.

Looking at other planets, the weights would be as follows:

• Mars: 29 kg
• Mercury: 29 kg
• Venus: 68 kg
• Jupiter: 1860 kg
• Saturn: 80 kg
• Uranus: 67 kg
• Neptune: 86 kg

The conditions on these planets are less or not at all suitable for walking. On gas giants, it is uncertain whether there is even a solid surface deep within their atmospheres. Moreover, Venus has extremely high atmospheric pressure, which even specialized probes can only withstand for a short time. On the gas giants Jupiter and Saturn, atmospheric pressure is extremely high, increasing dramatically as you go deeper into the atmosphere. It is believed that at greater depths, the pressure could reach thousands of times that on Earth.

Other factors, such as temperature and radiation, further make life on these planets impossible.

The photo accompanying this article was taken by NASA.