The gas giant planets have stronger gravity, which makes it harder for anything to escape, and are colder, which means that even with similar gravitational fields, gas molecules might not achieve escape velocity.
It feels bad about how ugly it looks stupid. DAH
because the gravity keeps the giants planets' gases from escaping.
because the gravity keeps the giants planets' gases from escaping.
For the same reason that our atmosphere on Earth does not escape into space - gravity.
Mercury's gases escaped into space once
because if u have enough gas in one area it creates mass and causes it to stay in the gravity field of a planet
The escape velocity of Mercury is about 4.3 km/s, which is the speed an object must reach to break free from Mercury's gravitational pull and move into space.
gravity keeps the giants planet's gasas from escaping
it's small size and low gravity
Jupiter has a gravity which is substantially greater than on Earth. The other gas giants have gravity which is similar to Earth's. Mercury, on the other hand, has a very weak gravity: around 38% compared to Earth. Also, being so close to the Sun it is blasted by the Solar wind. These two factors have stripped Mercury of its atmosphere.
The solar winds from the Sun, because Mercury is so close, blow the atmosphere away. Therefore, all of the gases it has are from the Sun because the solar winds are constantly replacing Mercury's atmosphere.
the gas giant planets have strong gravitational pulls that hold on to their thick atmospheres. Additionally, the high escape velocity prevents the gases from escaping into space. The cold temperatures of these planets also help in maintaining the integrity of their atmospheres.