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That depends on when you consider a planet to be "really small." Mars is much smaller than Earth, but it still retains an atmosphere. Mercury, the smallest planet in the solar system, does not have an atmosphere, but it is also very close to the sun, which would tend to drive away atmospheric gasses.
What else can I help you with?
Why doesn't Pluto have precipitation?
For a planet to have precipitation, it must have an atmosphere. Pluto is too small and gravitationally weak to retain an atmosphere, and even if it did, it would be frozen solid on the ground.
What do other planets not have in their lithospheres that earth does?
Mercury is reminiscent of the Moon - simply a ball of rock hotter than our satellite. Despite its appearance, though, the planet actually does have an atmosphere. Some astronomers believe that Mercury originally had a thick atmosphere like Earth, but the planet is so small that it has very low gravity. As a result of the planet's low gravity, Mercury's atmosphere was blown away by strong solar winds. This barely existent atmosphere is made of a number of compounds including hydrogen, oxygen, water vapor, and potassium.
How do you distinguish between the biosphere and atmosphere?
Atmosphere is the gaseous envelope that surrounds a planet and is held in place by gravity. Biosphere is the zone on and around a planet that sustains life.
What 2 conditions must be present on a planet if it is to have an atmosphere?
enough mass to keep it in placesource to create the atmosphere gasses
What characteristics determine whether a planet or moon can maintain an atmosphere?
gravity and temperature; It needs gravity so it can hold its atmosphere.
Why is there no atmosphere in Jupiter?
Jupiter has an atmosphere. Actually all the planet except the small core is one big atmosphere.
What planet has no atmosherer?
Its Mercury that has no real atmosphere due to its small size.
Is earth the only planet with a atmosphere?
No not really all have a atmosphere of some kind, some not fit to live in.
Why Pluto is a exception planet?
its really small
Which planet has the least atmosphere?
Mercury. Because of its small size and close proximity to the sun, it cannot sustain an atmosphere.
What is the planet Venus atmosphere?
the atmosphere of palnet venus is mainly contained by; carbon dioxide and a small amount of nitrogen.
What is the closest planet to the sun and has very little air?
Mercury is the closest planet to the Sun and has a very small atmosphere.
A planet with no atmosphere is?
Mercury. Mercury's atmosphere was blown away by powerful solar winds because of the planet's low gravity, due to its small size. This planet's high temperature is due to its proximity to the sun. Because of Mercury's lack of sufficient atmosphere, the planet is unable to moderate its range of surface temperatures.
What planet atmosphere has low air pressure?
Mercury, because the gravity on it is to small to hold any atmosphere in the first place.
Do any of the planet have oxygen in their atmosphere?
Yes. There is one planet with oxygen in its atmosphere: our home planet Earth.
Planet has almost no atmosphere?
The lack of atmosphere on a planet can result in extreme temperature variations between day and night, as well as high levels of radiation from the sun. Without an atmosphere to trap heat, temperatures can drop drastically at night. Additionally, the absence of atmospheric pressure can make it difficult for liquid water to exist on the planet's surface.
What the terrestrial planet that has no atmosphere?
what is the terrestrial planet that has no atmosphere
