Based on 20 years of observations by NASA’s Hubble Space Telescope, new research sheds light on one of the solar system’s ...

Uranus is blue-green in color, as a result of the methane in its mostly hydrogen-helium atmosphere. The planet is often dubbed an ice giant, since at least 80% of its mass is a fluid mix of water ...

While Saturn wears the crown for the least dense planet in our celestial family, Uranus is not far behind: Most of its mass is made up of an icy dense fluid of water, ammonia, and methane.

Most of its mass is thought to be a hot, dense fluid of "icy materials – water, methane, and ammonia – above a small rocky core." Uranus has 13 known rings and 11 of them can been seen in the ...

Results. If it migrates over 10 Uranus’ radii, a single satellite with minimum mass 4e-4 Uranus’ mass is able to tilt Uranus from a small obliquity and make it converge towards 90°.

Astronomers taking a closer look at Uranus believe it could be filled with a lot more methane than we previously thought. "The first models of Uranus and Neptune were constructed based on the ...

When tested with several different chemicals and various water/rock compositions, the closest recreation of Uranus and Neptune’s radius and mass required vast amounts of methane ice formed ...

It has a larger diameter than Neptune, the other ice giant, but a slightly smaller mass. Uranus is ringed in this recent Webb image. Image: SCIENCE: NASA, ESA, CSA, STScI IMAGE PROCESSING ...

They found that a moon with just half the mass of the one circling Earth could raise Uranus' tilt angle to close to 90° over millions of years. But they also found that the moons that now circle ...