While we dwell on the planet, we are affected by its gravity. The gravitational acceleration produced by this gravity is G=9.8m/s2. Other planets in the universe include Mars and the moon. Despite the fact that the earth is small and life on it is substantially different from life on Earth, there is no solid planet in the solar system with a gravity greater than that of the earth. Today, we'll imagine a high-gravity planet, such as one with a gravity of more than tens of G . What will it be like to live on a planet with such a high gravity?
A hypothetical high-gravity planet
To begin with, when a planet has a lot of gravity, life is more likely to live in the water all the time, and only the buoyancy of the water can compensate for the planet's tremendous gravity. Because of the high gravity, the pressure of the water at the same depth will be substantially higher than on the earth's surface, meaning that life will only exist near the surface.
There is a great likelihood that life on a planet with a high gravity will live in the sea rather than on land, and will spend their entire lives on the ocean's surface.
Let us now go to the second assumption. Life has already arrived on this high-gravity planet. These lifestyles are likely to be followed by animals such as centipedes. Their legs may be straight up and down to minimise joint and other problems. The effects of wear and tear are inescapable. Strong gravity will also make it harder for animals to turn around when they encounter obstructions when migrating, especially those with slender bodies. As a result, this species may have two heads, allowing its body to move not only forward but also backward, helping it to deal with predators fast.
Because falls on a planet with high gravity can be fatal, creatures grow very low to lessen their center of gravity, almost touching the ground. Furthermore, the atmosphere of a planet with high gravity must be much thicker than that of Earth. This requires the animal's lungs to become stronger in order to breathe air, as well as the heart to become stronger in order to enhance blood circulation. Muscles must be present in veins. Yes, exactly like our bodies' arteries.
Furthermore, unlike the huge trees of Earth, terrestrial plants on this planet cannot have lofty trunks and forked branches. The terrestrial plants will resemble mushrooms and will not produce many leaves.
In addition to the plant and animals, consider some additional remarkable features of the planet with high gravity. Water waves, for example, will be substantially smaller than those on land. Although the oceans will appear calmer than on land, the devastating power of these waves should not be underestimated. It is, nevertheless, much greater than the Earth's waves. Aside from the waves, the mountains on this planet are much lower than those on Earth, and the undulations are much less. On the whole, the planet's surface appears to be flatter.
A volcano on a high-gravity planet may not be as large as a volcano on Earth, but it will be more violent because its eruptions are less frequent, and it requires more pressure to produce an eruption, so every time a volcano erupts, both matter and energy significantly exceed that of Earth's volcanoes.
In general, we would envisage this scene on a high-gravity planet: the hills are little, the ocean is calm, the creatures are small, resting on the ground like centipedes, and plants such as mushrooms are even directly covered.