![]() Most of its mass is a hot, dense fluid of “icy” materials – water, methane and ammonia – above a small rocky core. Thus, Venus and Uranus are the hottest and coldest planets respectively. An astronaut on Mars would not be able to breathe the Martian air and would need a spacesuit with oxygen to work outdoors. The atmosphere on Mars is made up of mainly carbon dioxide. Mars does have an atmosphere, but it is about 100 times thinner than Earth’s atmosphere and it has very little oxygen. See also What Is The Quantum Theory Of Pain Can humans breathe on Mars? Saturn formed shortly after, amassing less material since Jupiter gobbled such a large portion of the outer disk. Jupiter formed less than 3 million years after the birth of the solar system, making it the eldest planet. Venus, which can be seen with the unaided eye fromEarth, is the brightest planet in our Solar System. ![]() But about three billion years ago, they all dried up-and no one knows why. The telltale tracks of past rivers, streams and lakes are visible today all over the planet. 5) Klinck station, Greenland (-69.6☌) ….4) Denali, Alaska, United States of America (-73☌) ….3) Amundsen-Scott Station, Antarctica (-82.8☌) ….2) Vostok Station Antarctica (-89.2☌) ….1) Eastern Antarctic Plateau, Antarctica (-94☌) ….Overall, Jupiter’s average temperature is -238 degrees F. It is estimated that the temperature of the cloud tops are about -280 degrees F. The clouds are likely made of ammonia ice crystals, changing to ammonia droplets further down. in the wintertime at the poles, to +70 degrees F. However, temperatures range from around -220 degrees F. Temperatures on Mars average about -81 degrees F. ![]() See also Is the core of the Moon hot? How hot is Mars? Venus is the exception, as its proximity to the Sun, and its dense atmosphere make it our solar system’s hottest planet. Uranus and Neptune, ice giants where scientists believe diamond rain falls below the surface. On average, Pluto’s temperature is -387☏ (-232☌), making it too cold to sustain life. It’s about 3.6 billion miles away from the Sun, and it has a thin atmosphere composed mostly of nitrogen, methane, and carbon monoxide. The temperature on Neptune is still very cold, of course – usually around -214℃ – but Uranus beats that. Uranus holds the record for the coldest temperature ever measured in the Solar System: a very chilly -224℃. Neptune is the second coldest planet, Uranus’s atmosphere makes it the coldest planet with temperature of minus 224 deg. Its temperature is very close to absolute zero – one of the main reasons why life cannot survive there. Neptune is the coldest planet in our Solar System, with mean temperatures of -330 ☏. See also Is Having Existential Dread Typical Is Neptune too cold to live? ![]() The planet’s average temperature is minus 353 F (minus 214 C). The temperature at this “surface” is approximately minus 346 F (minus 201 C). Scientists have defined the “surface” of Neptune as the region where the surface pressure is equivalent to the pressure on Earth at sea level. What is the temperature range on Neptune compared to Earth? At this temperature, conditions are suitable for methane to condense, and clouds of ammonia and hydrogen sulfide are thought to form (which is what gives Neptune its characteristically dark cyan coloring). It is also at this level that temperatures reach their recorded high of 72 K (-201.15 ☌ -330 ☏). The average temperature on Neptune is about minus 200 degrees Celsius (minus 392 degrees Fahrenheit). In the paper, Orton and his colleagues report that the temperature at Neptune’s south pole is hotter than anywhere else on the planet by about 10 degrees Celsius (18 degrees Fahrenheit).
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