When our Solar System was still young the 8 planets were still being formed, Mercury, Venus, Earth, and Mars are rocky because they are closer to the sun so most of the gas surrounding the planets faded away, Since the gas planets are farther away from the Sun (Cooler) the planet's gasses didn't fade out.
Gas giants are planets whose atmosphere is predominantly composed of gases, such as hydrogen and helium. These planets have a small solid core surrounded by thick layers of gas. Examples of gas giants in our solar system include Jupiter and Saturn.
Gravity is the force that keeps an atmosphere in place, surrounding a planet. Since there is no actual roof or container holding in the atmosphere, gas can always leak away into outer space, if it is not held in place by gravity. So the stronger the gravitational force, the more atmosphere can be retained. Large planets have a lot of hydrogen in their atmosphere, but hydrogen leaks away from smaller planets. Large planets attracted more gas when they were originally formed, as well. Remember that the solar system itself, and everything in it, originally condensed out of an interstellar cloud of gas and dust.
Venus is the planet surrounded by a thick atmosphere of deadly gases. Its atmosphere is composed mainly of carbon dioxide and sulfuric acid clouds, creating a harsh environment with extreme temperatures and pressure on the surface.
All the outer planets in our solar system are gas giants with no solid surfaces. They are composed mainly of hydrogen and helium, and have thick atmospheres. They are also much larger in size than the inner rocky planets.
They don't all have thick atmospheres. Mars has a thin atmosphere and Mercury barely has an atmosphere at all. No planet in the solar system other than Earth has significant amounts of elemental oxygen in the atmosphere. This is the gas we get from breathing. Additionally, the other planets are too hot, too cold, or have pressure that is too high or too low for us to breathe.
because its cold
gravity keeps the gas giants planets gases from escaping so they have thick atmosphere
No. As the name gas giant implies, these planets are made largely of gas. They have extremely thick atmospheres.
first it is atmosphere it is earth has enough oxygen for us to live on it is not a thick as gas planets cuz its not a gas planet its a rocky 1
Gas giants are planets whose atmosphere is predominantly composed of gases, such as hydrogen and helium. These planets have a small solid core surrounded by thick layers of gas. Examples of gas giants in our solar system include Jupiter and Saturn.
Atmosphere.
A gas giant often has a thick atmosphere composed mainly of hydrogen and helium. These planets typically have no solid surface and may have many moons and planetary rings. They are much larger than terrestrial planets like Earth and are located farther from their host star.
All the outer planets, Jupiter being the thickest.
Gravity is the force that keeps an atmosphere in place, surrounding a planet. Since there is no actual roof or container holding in the atmosphere, gas can always leak away into outer space, if it is not held in place by gravity. So the stronger the gravitational force, the more atmosphere can be retained. Large planets have a lot of hydrogen in their atmosphere, but hydrogen leaks away from smaller planets. Large planets attracted more gas when they were originally formed, as well. Remember that the solar system itself, and everything in it, originally condensed out of an interstellar cloud of gas and dust.
Venus is the planet surrounded by a thick atmosphere of deadly gases. Its atmosphere is composed mainly of carbon dioxide and sulfuric acid clouds, creating a harsh environment with extreme temperatures and pressure on the surface.
They are called gas giants, actually. They are called that, because they have a very thick atmosphere and the core is so deep below the 'surface' of the atmosphere that we cannot see the core.
Jupiter and all the gas giants.