The planet’s elusive aurorae are much colder than expected, which is how they evaded detection for so long.

Astronaut Don Pettit captured the moment a vivid green aurora appeared below the International Space Station orbiting the earth. Posting to X, Pettit explained they rotated 180 degrees and flew ...

New observations have revealed that we were wrong about the length of a day on Uranus. According to the most precise ...

Aurora lights on Uranus helped NASA’s Hubble Space Telescope measure the planet’s interior rotation rate, changing what astronomers know about how long a day is on the cold and windy world.

Astronomers have just revealed that a day on Uranus is longer than was previously thought, at 17 hours, 14 minutes and 52 seconds. This is 28 seconds longer than the previous estimate, which was made ...

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

Neptune's unique blue light. The planet's auroras are captured vividly in great detail by NASA's Webb telescope ...

The sounding rockets released vapor tracers and pressure sensors at different altitudes across central and northern Alaska ...