Temperature On Neptune

Now that Pluto has been demoted from a planet to a dwarf planet, Neptune is now the most distant planet in the solar system. It is 2.8 million miles from the Sun or 30 times the distance of the Earth to the Sun. Its distance has also made it, until recently, one of the most mysterious planets in our system. In fact, most of what we know about the planet comes from the Voyager 2 spacecraft, which passed by Neptune in 1989, although this has since been supplemented by ground-based and Hubble Space Telescope observations.

As expected, Neptune is one of the coldest planets in the solar system. The planet is an ice giant, meaning it doesn’t have a solid surface; its ‘surface’ is where the planet’s clouds meet space. At this point, the temperature of Neptune can reach as low as 55° Kelvin (or 50° above absolute zero) although the mean temperature of the planet is 73° K (-200° Celsius). However, temperatures at the South Pole are -10° C warmer than the rest of the planet because it is currently titled towards the Sun.

Once you travel down into the interior of the planet, the clouds condense into a liquid layer surrounding a central core made of ice and rock. At the core, in contrast to the surface, temperatures reach 7000° C, which is as hot as the surface of the Sun. The temperature differences between the surface and the core results in powerful wind storms, which can hit as high as 2100 km/hr, making them the fastest in the system.

The atmosphere of Neptune is composed mainly of helium and hydrogen, with large quantities of ice mixed in. Because of this, and increasing pressures and temperatures as you descend towards the core, some scientists have speculated that there could be a layer of the planet where there are vast oceans of water. However, conditions have to be just right and they may not yet exist on the planet until a billion years from now when Neptune is cool enough.

  • ass

    i agree mr. mann

  • mr mann

    Ummmm…whomever wrote this….there is a mistake! The distance from Earth to Neptune is about 2.8 BILLION miles….not million miles!!

  • lisathepirate

    Thanks, I can use this :D. I would love to live on Neptune, I’ve heard the people are less annoying there.

  • ice cream man

    pluto is not a planet, sammy!!!!!!!!

  • http://gmail Aisha

    my fav color is blue and neptune is blue woop woop :)

  • http://neptun kaleigh

    i lov eneptun

  • sammy

    PLUTO IS A PLANET……so stop saying tht its not bc it is

  • sammy

    PLUTO IS A PLANET……so stop saying tht its not bc it is

  • http://kaso Kaso

    best planet evr cuz its beautiful

  • Sandra Nsiah

    Neptune is not a good place to live

  • Bob

    This website is great. Thank you creators! :)

  • http://planetsrus best friends

    cool neptune

    of coures

  • http://www.planetfacts.org amber doudrick

    i love neptune!!!!!!!!!!!!!!

  • http://planetfacts.org/temperature-on-neptune/ Ruth

    I love Neptune but would hate to live on it! :-)

  • http://www.BruceLee.com BruceLee

    I’m doing a project on Neptune

  • hi im sexy

    neptune in amazing defo my fave planet!


  • hi im sexy

    *2.8 BILLION miles from the sun

  • Unknown Sponge

    Dhiz iz mah homewurk lol wait is my project

  • Darien

    that was really good to research some people say it just a planet who care we can’t live on it

  • hannah montana

    I love neptune and I finally found a website that has all the imformation for my report ill totally get a 100

  • Christal

    This really helped me out on project

  • natalia

    haha, i wrote this in 2012 and yeah neptune is awesome!!!:D

  • Justin Beiber

    I would hate to live on neptune. :( lol

  • Selena Gomez

    Neptune is my favorite

  • http://website lls

    I love neptune? too

  • http://nasa.com watever

    hahaha……..these commets crack me up

  • http://planetfacts.org/temperature-on-neptune/ lol

    brenda u have no life…

  • Brenda

    neptune is the best planet

  • Brenda

    i love neptune ???????????????????????????

  • Brenda

    this planet is ugly right belen

  • charlie

    me to!

  • joe

    finally ive been lookin every where.

  • lily

    yes this is finally something i need

  • http://fesyryhnbcnsn.com carl

    it is 2.8 billion miles from the sun