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Far-flung Uranus and Neptune — the ice giants of our solar system — are as mysterious as they are distant. Soon after its launch in 2021, NASA’s James Webb Space Telescope will change that by unlocking secrets of the atmospheres of both planets.
Uranus (left) and Neptune are classified as ice giant planets because their rocky, icy cores are proportionally larger than the amount of gas they contain. The gas giants — Jupiter and...
Ice giants are massive planets composed primarily of elements heavier than helium and hydrogen, such as sulfur, nitrogen, carbon, and oxygen.
In our solar system, the “ice giants” Neptune and Uranus are far less dense than rocky Venus and Earth. But astrophysicists on NASA’s TESS mission have now found an exoplanet, TOI-849b, that appears to be 40 times more massive than Earth, yet just as dense.
Uranus is one of two ice giants in the outer solar system (the other is Neptune). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small rocky core.
Neptune takes about 16 hours to rotate once (a Neptunian day), and about 165 Earth years to orbit the sun (a Neptunian year). Neptune is an ice giant. Most of its mass is a hot, dense fluid of "icy" materials – water, methane and ammonia – above a small rocky core.
Uranus is an ice giant. Most of its mass is a hot, dense fluid of "icy" materials – water, methane and ammonia – above a small rocky core. Uranus has an atmosphere made mostly of molecular hydrogen and atomic helium, with a small amount of methane.
Far-flung Uranus and Neptune -- the ice giants of our solar system -- are as mysterious as they are distant. Soon after its launch in 2021, NASA's James Webb Space Telescope will change that by...
Neptune is one of two ice giants in the outer solar system (the other is Uranus). Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small, rocky core. Of the giant planets, Neptune is the densest.
Beyond Saturn are two of the most misunderstood and bizarre planets in our solar system—the “ice giants” Uranus and Neptune. Did you know that Uranus has rings and appears to spin on its side? And that windy and intensely blue Neptune once had an Earth-sized Great Dark Spot?