Most of our planet is covered with water unsuitable for drinking. The world ocean covers 70% of the Earth's surface and accounts for approximately 97% of all water on the planet. On average, one liter of seawater contains 35 grams of salts (mainly sodium chloride). It seems like it's a little bit. However, it turns out that there are 35 million tons of salt in one cubic kilometer of the world ocean, and in total there are about 1,386,000,000 cubic kilometers in the ocean. So where did this salt come from?
The moons of Jupiter can warm each other with the help of tidal forces, and do not depend in this regard only on the gravity of the planet. That's why there are oceans of liquid water on them.
It often seems to us that we live in a world about which we know almost everything. The sky is blue, the grass is green, and there are only six continents on the planet. However, a new study suggests that another continent is emerging on Earth in the Indian Ocean.