78% nitrogen 20% oxygen 1% of other gases
all have 1 moon
Outer planets like Jupiter and Saturn have thick atmospheres composed mostly of hydrogen and helium. Uranus and Neptune have atmospheres rich in frozen ices like water, ammonia, and methane. Strong winds, massive storms, and unique cloud formations characterize the atmospheres of these outer planets.
All except Mercury.
All planets, both with and without atmospheres, encounter meteoroids. If the planet has an atmosphere then those meteoroids will burn up long before reaching the surface. Those without atmospheres do not have such protection and so the meteoroids strike the surface directly.
Some dwarf planets, like Pluto, have thin atmospheres composed mainly of nitrogen, methane, and carbon monoxide. However, the atmospheres of dwarf planets are not as substantial as those of larger planets like Earth or Jupiter.
All planets have an elliptical orbit and the planets do not cross paths. They are all at least 15,000 miles around. They all have atmospheres. They all have their own gravity. They all have cores.
All planets in our solar system have atmospheres, but their compositions and characteristics vary. For example, Venus has a thick and toxic atmosphere primarily composed of carbon dioxide, while Mars has a thin atmosphere mainly made up of carbon dioxide. Earth's atmosphere is mostly nitrogen and oxygen. Gas giants like Jupiter and Saturn have thick atmospheres composed mostly of hydrogen and helium.
I don't think so.
no
The terrestrial planets in order from the thickest to thinnest atmospheres Venus, Earth, Mars, and Mercury. Since the gas giants are almost entirely made of gas, it is difficult to determine where the atmospheres end.
Terrestrial planet atmospheres are primarily composed of gases like nitrogen and oxygen, with small amounts of carbon dioxide and other trace gases, while Jovian planet atmospheres consist mostly of hydrogen and helium, along with traces of methane and ammonia. Terrestrial planets have thinner atmospheres compared to Jovian planets, which have massive, thick atmospheres made up of mostly hydrogen and helium.
Yes