Tennis balls are hairy to improve their aerodynamic characteristics. The hairs on a tennis ball create additional drag when it is in motion, increasing air...
Volcanic rocks often contain valuable minerals such as gold, silver, copper, and even diamonds. These minerals form inside the molten magma found in magma chambers...
Pure gold, or 24 carats, is a very malleable and soft precious metal. In jewelry, it is rarely used in its pure form because of...
Silver has the particularity of being able to react with certain elements present in the air or on the skin, which causes it to darken. Indeed, silver...
Octopuses have an incredible body flexibility thanks to their unique anatomy. Their bodies are mainly made up of soft tissue, allowing them to squeeze through...
Salmons begin their spawning period once they reach sexual maturity, typically between 3 and 8 years old. This process takes place at specific times of...
Mount Bisoke is a volcano located in Virunga National Park, in the Democratic Republic of Congo and Rwanda. It is part of the Virunga volcanic...
In space, gravity is different from what we experience on Earth. This difference is due to the constant free fall of the astronaut around the...
The speed of sound in water is faster than in air, because the density of water is higher than that of air. On average, sound...
The solar year is the time it takes for the Earth to complete one full orbit around the Sun. This duration corresponds to approximately 365.25...
