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Rocky planets are formed when the deepest parts of the rock are warm. The planet's sun or protostar making the heavier elements sink to the deepest parts and stay there by warming the planet.
The basic answer is that planets that are mainly gas could not survive close to the Sun. The temperature would cause the gas to escape into space.
What else can I help you with?
What planets are formed from leftover formation of the sun at the center of the cloud?
All planets are formed form the remains of the solar nebular.
Why are the surfaces of the inner planets rocky and solid yet the surfaces of the outer planets are gasous with icy centers?
The inner planets are rocky and solid because they formed closer to the sun where it was too hot for volatile gases to condense. The outer planets formed in colder regions where volatile gases like hydrogen and helium could condense, leading to their gaseous composition and icy centers.
What are the 2 kinds of planets?
Rocky planets and gaseous planets.
Is Mercury rocky or gaseous?
Mercury is a rocky planet. The inner planets (first four planets from the sun) are rocky planets (which means that you could stand on them) and are the smallest. While the outer planets (last four planets from the sun) are gas planets and the biggest.
Which rocky planets have well-developed atmospheres?
Only Earth and Venus has a well developed atmosphere out of the rocky planets. Note that the rocky planets are Mercury, Venus, Earth and Mars.
How the rocky inner planets were formed?
By "accretion" of "planetesimals" from the "protoplanetary disk".
What is another word for terrestrial planets?
Rocky planets
What planets are formed from leftover formation of the sun at the center of the cloud?
All planets are formed form the remains of the solar nebular.
Why are there there 4 rocky planets and 4 gas planets either side of the asteroid belt?
the sun was bigger and brghter then gave birth to four gas planets then rocky ones and probable give birth again our system is getting larger the planets lining up just might do that 26000 104000 104000000 anamate solar system in reverse its possibe
Why are the inner planets different to the outer planets?
The inner planets are all considered rocky planets in that under atmospheric layers, they have a rocky surface. The outer planets are made of gas and liquid, and are called gas giants. They have no solid surface. Also, all the outer planets have rings while the inner planets do not.
Are inner planets Rocky?
Th inner planets are rocky because as the Sun and planets formed the more volatile elements could not condense into droplets near to the hot Sun. Thus the inner planets are made form stuff with a high melting/boiling point and the outer planets (where it was cooler) are made from the gases.
what is another name for the inner planet?
Terrestrial Planets, or Rocky Planets.
Are the gas planets bigger or smaller than the rocky planets?
the gas planets are bigger than the rocky planets
How many rocky planets are there in the solar?
There are four rocky planets in the solar system: Mercury, Venus, Earth, and Mars.
What are asteroid belts made of?
Pieces of rocks made of minerals similar to those that are formed the rocky planets and moons.
Is the planets gassy or rocky?
rocky
Why are the inner planets known as the rocky planets?
they are rocky and have terrain areas the rest of the planets are all gas
