helium n hydrogen r elements of sun but other planets do not have why?

Answer 1

Jupiter, saturn, uranus, and neptune all are made up mostly of hydrogen and helium. The inner rocky planets don't have as much because 1) they don't have the gravity to retain light elements like hydrogen and helium and 2) the light and solar wind from the sun blew it all away long ago.

Answer 2

Jupiter, Saturn, Uranus, and Neptune all are made up mostly of hydrogen and helium. The inner rocky planets don't have as much because 1) they don't have the gravity to retain light elements like hydrogen and helium and 2) the light and solar wind from the sun blew it all away long ago.

Answer 3

The Sun (with capital "S") is a star (with small "s").
It and other stars are immense balls of gases.

Of the planets that orbit our star in our Solar System, the inner planets are solid masses of fairly heavy materials. The outer planets like Jupiter, Neptune, and Uranus are gas giants with possibly some metals in their core. Those gas giants do have hydrogen and helium but not in the quantity or mix ratio as the Sun.

Retention of the lighter gases is totally dependent on the amount of gravity that a planet has. - Not enough gravity, the gases escaped off into space (like what happened to the Moon).. floated away. - With sufficient gravity, the gases were retained (as happened on the planet Earth).

The amount of gravity is dependent upon the amount of iron and nickle in the core of the planet. Earth has a lot of that material in its core.

Answer 4

Well, the sun is a star, not to be compared with "other planets" for one. I was not aware that we are on the only planet with Hydrogen and Helium - what a gas!

Answer 5

It depends on how the plants are formed, no one knows how they were formed you probably think the planets came from the sun, its also possible that the other planets didn't have the right size or % of gas to make it stable enuff to keep the gases on the planets, unlike the further away planest which are full of gasses like jupiter. i think it may have to do with the gravitational pull; bigger masses have more gravity and smaller ones have less. and i guess earth has the right amount of gravity/size to sustain the gasses.

Answer 6

i do no longer think of this answer you have the alternative of A, B or C or D because of the fact those components brought about by skill of interactions between the warmth produced by skill of the huge Bang and the elementary chilly that accompanied the warmth while after the earth from the solar even observed that each and every time away planets from the solar greater desirable those components and those components are produced who Nfaal uncomplicated textile with warmth and reaction products on the interactions of warmth to the interaction of those components, thereby turning out to be a funky and that i'm hoping that I spoke back your question as much as obtainable

Answer 7

The sun is a star, not a planet.

Answer 8

The sun is not a planet so the comparison is moot.