Their immense gravity keeps the gases there.
In order for gas to leave a planet it needs to be hot enough and to overcome the planet's gravity. The outer planets are colder and are very massive in comparison to Earth.
outer planets are gas giants whille inner planets are just rocky planets. that includes that outer planets have significant amount of mass than the inner planets
no.
There are a lot of differences between the inner and outer planets. First of all, they inner planets are also known as the "Rocky planets". THey are rocky, hence their name "Rocky planets". And the outer planets are also known as "Gas Giants." THey are mainly composed of gas, hence their name, "Gas Giants." Another difference is their mass. The outer planets have greater mass than the inner planets. In other words, they are heavier.The inner planets follow orbital paths which, like those of the outer planets,are centered on the sun. But the inner planets, without exception, are nearerto the sun than any of the outer planets are.
The inner planets are small, the outer planets are huge in comparison.The inner planets have rocky surfaces, the outer planets are gas giants.All of the outer planets have rings. None of the inner planets does.All of the outer planets have several moons, some of them quite large.
because the outer planets are made of gas.
The outer planets are the planets that are made of gas. Each of the outer planets are mad of gas and can not hold life.
gas giants.
gas planets
The outer planets are gas planets
Yes because the four outer planets,Jupiter, Saturn, Uranus, and Neptune are gas planets. They are known for their gas. The outer planets (closer to the sun) have rocky surfaces. So the outer planets have gas surfaces
No. The outer planets are larger and are mainly gaseous.
The outer planets are Gas Giants, also known as Jovian planets.
The outer planets
In order for gas to leave a planet it needs to be hot enough and to overcome the planet's gravity. The outer planets are colder and are very massive in comparison to Earth.
Outer planets are gas planets and they are outside the astroid belt and are further away from the sun.
they are larger but not rockier then the inner planets the outer planets are made of gas.