April’s planetary parade has fewer planets. Only four will line up: Venus, Saturn, Mercury and Neptune. April's parade of ...

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

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

Uranus Findings Can Aid the Study of Exoplanets Now more than 30 years into its mission, the Hubble Space Telescope has ...

Observations of Jupiter show that ammonia is unevenly distributed in the upper atmosphere, against expectations of uniform ...

The team used more than a decade’s worth of observations of Uranus’ unique aurorae taken with Hubble and refined the planet’s rotation period. This technique revealed that it completes a rotation 28 ...

Astronomers have just revealed that a day on Uranus is longer than was previously thought, at 17 hours, 14 minutes and 52 ...

Imagine giant slushy hailstones made of ammonia and water wrapped in a shell of ice, plunging through Jupiter’s atmosphere in ...

The reason this worked so well is thanks to Hubble’s consistent, long-term observations. Over more than a decade, the space ...

A day on Uranus is about half a minute longer than previously thought, according to new research. Nearly 40 years ago, ...

Saturn, the sixth planet from the Sun, captivates scientists with its massive size, stunning rings, and diverse moons.