• Question: what is the climate like in other planets?is it the same as earths?

    Asked by ellieexo to Adam, Alexander, Aron, Jess, Neil on 14 Mar 2014.
    • Photo: Neil Bowles

      Neil Bowles answered on 14 Mar 2014:


      Depends on whether the planet has an atmosphere or not is the first thing. Places like the Moon don’t have an atmosphere like the Earth, so there is no air or water to move the heat from the Sun around. The Moon does has a seasons, just not as big an effect as we do on Earth. Because the Moon has no air, heat is moved by conduction and radiation only (no convection) and this means that temperatures on the lunar surface can be extreme , 100C in direct sunlight but step into the shadow of a boulder and the temperature can drop to -120C.

      Venus is a pretty extreme place as well, It also has clouds made of sulphuric acid so its a pretty nasty place and thick carbon dioxide atmosphere trapping the heat from the sun in a super greenhouse effect. The surface pressure on Venus is about 90 times that of the Earth, and the temperature is ~500C.

      Mars’ atmosphere is much less thick (less than 100th) than the earth’s and also made of carbon dioxide. Mars does have water ice clouds and polar caps made of water ice, but it is so cold that the atmosphere can freeze out in winter, forming a layer of carbon dioxide frost, especially at the poles.

      Jupiter, Saturn, are gas giants, so at these planets the weather causes the clouds and storms that we see from Earth. Jupiter’s great red spot is actually a giant hurricane about the size of the Earth! Uranus and Neptune are ice giants, but Neptune has some of the fastest winds measured in the solar system moving clouds of methane ice.

      Weirdly, in some ways the most Earth like place is a moon of Saturn called Titan, that has thick nitrogen atmosphere. Its really cold as it is far from the Sun (~-180C), so water is frozen as hard as a rock. However can methane can still be a liquid, so on Titan you get methane rain and lakes of hydrocarbons.

    • Photo: Aron Kisdi

      Aron Kisdi answered on 18 Mar 2014:


      What Neil said is a great answer. Two addition:

      Mars has a very simplistic atmosphere compare to Earth. So studying Mars atmosphere weather and climate can help us to understand the climate on Earth!

      There are also exoplanets, planets around stars other then the Sun. There might be very similar planets to Earth out there!

    • Photo: Jessica Marshall

      Jessica Marshall answered on 19 Mar 2014:


      I don’t think I can add much to this! Other than we would live to bring back some samples from other planets- that has never been done before!

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