Any type of gas can do that. The only condition is that there be a sufficient amount of gas - otherwise, the gravity won't be able to overcome the pressure of the gas.
When gasses lose heat they condense into liquids.
Flow. Gases and liquids can both modify their shapes.
false.
The individual particles attract one another. Under certain circumstances, this can overcome the gas pressure - especially when large amounts of gas are involved.
One main reason is the gravity a dense object like a terrestial planet has. As gravity depends on the density of a object and a rocky planet has much density...our earth is the densest object in the solar system but Jupiter's gravity is more as gravity depends upon size too. The gravity holds the gases forming the atmosphere. Another reason is the core which has a magnetic effect and forms a magnetic layer which has some effect on the atmospheric gases and saves it from going away to the space by attracting the gases towards the pole where the gravity is the highest.
A protostar forms when gravity pulls the dust and gases in a nebula together.
By the gravity compression of interstellar gases - same as all other stars.
Gases are condensed at low temperatures.
The two gases that are most common in interstellar clouds,consist mostly of gas,especially hydrogen and helium.
No. Saturn is one of the "gas giant" planets, which means it is made up entirely of gases, some of which condense due to the planet's tremendous gravity.
When gasses lose heat they condense into liquids.
no
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Incondensible gases, are gases that do not condense and do not dissolve readily in hot water. Steam ejectors are used to remove these gases from a condenser.
Flow. Gases and liquids can both modify their shapes.
false.
The individual particles attract one another. Under certain circumstances, this can overcome the gas pressure - especially when large amounts of gas are involved.