It is the closest one to the earth, so that's where the force of gravity is the strongest.
Gravity is strong enough to hold on to a large number of particles.
The exosphere is the least dense part of the earth's atmosphere.
The core is the most dense part of the sun, where temperatures and pressures are extremely high, enabling nuclear fusion to occur. This fusion process releases energy in the form of light and heat that eventually reaches the surface of the sun.
The word atmospheric is an adjective. It means to be coming from the atmosphere.
Troposphere
The planet GJ1214B, is the only planet know to date that has the most water on it. The planet is nearly three times as large as Earth and made almost entirely of water, forming a global ocean more than 15,000km deep. Astronomers detected the alien world as it passed in front of its sun, a red dwarf star 40 light years away in a constellation called Ophiuchus, after the Greek for "snake holder".
Troposphere is the most dense part because it is at the bottom of the atmosphere.
The exosphere is the least dense part of the earth's atmosphere.
I live in the deepest, thickest, warmest, most dense part of the column of atmosphere located over Chicago.
One could say that the atmosphere is the least dense, but of the surface the crust is the least dense.
hot, less dense air rises
Most of the rainforest is very dense, but the understory and canopy are both pretty dense. The canopy and the understory are both very dense but the undersrory is the most dense.
inner core
Upper Part
The nucleus is the most dense part of an atom.
The ozone part of atmosphere. It is the most precious part.
The air becomes less dense, the higher you go. And generally, the temperature gets colder until you reach the thermosphere, which is the hottest part of Earths atmosphere.
The lowest part of the atmosphere is called the troposphere. It is where most weather events occur and contains approximately 75% of the atmosphere's total mass.