When a planet's orbit brings it between Earth and a distant star, it's more than just a cosmic game of hide and seek. It's an ...

Uranus is an ice giant planet with a thick atmosphere over a hot mantle of water, ammonia, and methane ices. Humanity has ...

The data collected will help researchers understand how Uranus’ atmosphere functions and how it has evolved over the past 30 ...

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout ...

Hubble Space Telescope data show that the time taken for the planet to revolve around its axis is almost half a minute longer than was thought.

This approach can now be used to determine the rotation rate of any celestial object with a magnetic field and auroras — including exoplanets.

They're solid bodies with visible surface features ... storms that can act as markers. Uranus is another matter entirely. About 63 times the size of Earth, the planet is only slightly denser ...

Imagine a Slushee composed of ammonia and water encased in a hard shell of water ice. Now picture these ice-encrusted ...

Observations of Jupiter show that ammonia is unevenly distributed in the upper atmosphere, against expectations of uniform mixing. Scientists found evidence for a complicated but apparently real ...

NASA scientists seized a rare opportunity to study Uranus’ atmosphere during a stellar occultation, when the planet passed ...