kaasujättiläisten

Kaasujättiläiset, known in English as gas giants, are a type of planet that primarily consists of hydrogen and helium. They are the largest planets in our solar system and are characterized by their lack of a solid surface. Instead, their atmospheres are incredibly deep, gradually increasing in density and pressure as one moves inward.

Jupiter and Saturn are the two most prominent examples of gas giants in our solar system. Both possess powerful magnetic fields and numerous moons. Jupiter, the largest planet, has a distinctive Great Red Spot, a persistent storm larger than Earth. Saturn is renowned for its spectacular ring system, composed of ice particles and dust.

The interiors of gas giants are believed to be composed of metallic hydrogen under immense pressure, which generates their magnetic fields. They also have rocky or icy cores, though their exact composition and size are still subjects of scientific research. Their massive gravitational pull influences the orbits of other celestial bodies, including asteroids and comets.

Uranus and Neptune, while also classified as gas giants, are sometimes distinguished as "ice giants" due to a higher proportion of heavier elements like water, ammonia, and methane in their composition compared to Jupiter and Saturn. These heavier elements are in a fluid state in their interiors. Despite their differences, all gas giants play a significant role in the dynamics of their respective star systems.