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  2. Climate of Uranus - Wikipedia

    en.wikipedia.org/wiki/Climate_of_Uranus

    The lowest temperature recorded in Uranus's tropopause is 49 K (−224 °C), making Uranus the coldest planet in the Solar System, colder than Neptune. [ 22 ] [ 23 ] Another hypothesis states that when Uranus was "knocked over" by the supermassive impactor which caused its extreme axial tilt, the event also caused it to expel most of its ...

  3. Ice giant - Wikipedia

    en.wikipedia.org/wiki/Ice_giant

    In the 1990s, it was determined that Uranus and Neptune were a distinct class of giant planet, separate from the other giant planets, Jupiter and Saturn, which are gas giants predominantly composed of hydrogen and helium. [1] Neptune and Uranus are now referred to as ice giants. Lacking well-defined solid surfaces, they are primarily composed ...

  4. Giant planet - Wikipedia

    en.wikipedia.org/wiki/Giant_planet

    Unlike the other giant planets, Uranus has an extreme tilt that causes its seasons to be severely pronounced. The two planets also have other subtle but important differences. Uranus has more hydrogen and helium than Neptune despite being less massive overall. Neptune is therefore denser and has much more internal heat and a more active atmosphere.

  5. Scientists Thought They Knew What Uranus and Neptune ... - AOL

    www.aol.com/scientists-thought-knew-uranus...

    The ice giants Uranus and Neptune live up to their name. Although humans have only ever sent one spacecraft (Voyager 2) toward these far-flung worlds, scientists have a pretty good idea that these ...

  6. Scientists can finally explain why Uranus and Neptune are ...

    www.aol.com/scientists-finally-explain-why...

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  7. Uranus - Wikipedia

    en.wikipedia.org/wiki/Uranus

    The lowest temperature recorded in Uranus's tropopause is 49 K (−224.2 °C; −371.5 °F), making Uranus the coldest planet in the Solar System. [ 18 ] [ 95 ] One of the hypotheses for this discrepancy suggests the Earth-sized impactor theorised to be behind Uranus's axial tilt left the planet with a depleted core temperature, as the impact ...

  8. On Neptune and Uranus, Diamonds Rain Down from the Sky - AOL

    www.aol.com/neptune-uranus-diamonds-rain-down...

    Scientists have finally discovered how sheets of diamond rain form on the ice giants, Neptune and Uranus. The answer could explain why Neptune’s core is hot.

  9. Neptune - Wikipedia

    en.wikipedia.org/wiki/Neptune

    The difference in flow direction is ... of Neptune's troposphere reach a low temperature of 51.8 K (−221.3 °C). ... to the field around Uranus. Neptune's rotation ...