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 ...

There are 168 health systems and medical centers that Optum may refer its commercial payer and employer clients to for ...

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.