The coldest planet in our solar system on record goes to Uranus which is closer to the Sun and 'only' about 20 times further away from the Sun than the Earth is. The lowest temperature recorded there was minus 224 degrees Celsius.
Neptune is the second coldest planet, Uranus's atmosphere makes it the coldest planet with temperature of minus 224 deg. celcius.
Uranus - Minus 320°F (-195°C) Neptune - Minus 330°F (-200°C) Dwarf Planet Pluto - Minus 375°F (-225°C)
Why is Uranus so cold? The big problem is that Uranus isn't generating any heat. The other giant planets in the Solar System actually give off more heat than they receive from the Sun. This is because they're slowly compacting down, and this generates high temperatures inside their cores.
Mars once ran red with rivers. The telltale tracks of past rivers, streams and lakes are visible today all over the planet. But about three billion years ago, they all dried up—and no one knows why.
Uranus gets its blue-green color from methane gas in the atmosphere. Sunlight passes through the atmosphere and is reflected back out by Uranus' cloud tops. Methane gas absorbs the red portion of the light, resulting in a blue-green color.
Liquid water can't persist because Mars has no atmosphere to protect against evaporation. Water has, so far, only been found in the form of ice.
The Klinck weather station holds the record for the coldest place in the Arctic Circle. Located in central Greenland, it beat the previous record held by Oymyakon (see below) by around 2 degrees in December 1991, reaching -69.6°C. Despite these cold temperatures, much of Greenland's ice is melting rapidly.
It has a strong greenhouse effect, similar to the one we experience on Earth. Because of this, Venus is the hottest planet in the solar system. The surface of Venus is approximately 465°C!
Mariner 4, which flew by Mars on July 14, 1965, found that Mars has an atmospheric pressure of only 1 to 2 percent of the Earth's. Temperatures on Mars average about -81 degrees F. However, temperatures range from around -220 degrees F. in the wintertime at the poles, to +70 degrees F.
But what of the average temperature of space away from the Earth? Believe it or not, astronomers actually know this value quite well: an extreme -270.42 degrees (2.73 degrees above absolute zero).
Astronomers have discovered that a distant planet is both. With one side always hot as lava and the other chilled possibly below freezing, Upsilon Andromeda b is a giant gas planet [image] that orbits extremely close to Upsilon Andromeda, a star 40 light-years from our solar system in the constellation Andromeda.
But Earth is the only known planet (or moon) to have consistent, stable bodies of liquid water on its surface. In our solar system, Earth orbits around the sun in an area called the habitable zone.
Since Mercury has hardly any atmosphere, it does not have weather like storms, clouds, winds or rain! But the surface of Mercury can reach 427 degrees during the day (because it is so close to the Sun) and can drop to -187 at night (because there is no atmosphere to trap the daytime heat).
The explanation for this is that in its formation history, Uranus collided with an Earth-sized object which lead to the change of its rotation.
Ice is common in our solar system, from deposits at the poles of Mercury and the Moon to ice-covered moons and rings around distant Jupiter and Saturn, and comets made of ice and other materials streaming across the spaces between. And, of course, ice is present around our own world.
The planet Jupiter is a beast: Three-hundred-and-seventeen times the mass of the Earth, mostly made of metallic hydrogen, and at the center of an astonishing collective of orbiting natural bodies.
Due to its immense size, mass, and gravitational pull, Jupiter has the most satellites of any planet in the Solar System. At present, the Jovian system includes 80 known moons, though it is estimated that it may have over 200 moons and moonlets (the majority of which are yet to be confirmed and classified).
Uranus' atmosphere is made up of hydrogen, helium and methane. The methane in Uranus' upper atmosphere absorbs the red light from the Sun but reflects the blue light from the Sun back into space. This is why Uranus appears blue.
Surface. As a gas giant, Jupiter doesn't have a true surface. The planet is mostly swirling gases and liquids. While a spacecraft would have nowhere to land on Jupiter, it wouldn't be able to fly through unscathed either.
' So where does that redness come from? Well, a lot of rocks on Mars are full of iron, and when they're exposed to the great outdoors, they 'oxidize' and turn reddish - the same way an old bike left out in the yard gets all rusty.