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Uranus Facts. Uranus is the seventh planet from the Sun. It’s not visible to the naked eye, and became the first planet discovered with the use of a telescope. Uranus is tipped over on its side with an axial tilt of 98 degrees. It is often described as “rolling around the Sun on its side.”.
Uranus is a very cold and windy world. The ice giant is surrounded by 13 faint rings and 28 small moons. Uranus rotates at a nearly 90-degree angle from the plane of its orbit. This unique tilt makes Uranus appear to spin sideways, orbiting the Sun like a rolling ball.
- Uranus is too dim for ancient civilizations to have seen it. It is the seventh planet from the Sun (Order of the planets from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto (the dwarf planet)).
- This is why there has been no mention of Uranus sightings before William Herschel saw it through his telescope in 1781. He had been surveying stars, including those that were ten times dimmer than visible stars.
- When he looked through the telescope and saw a strange, slow-spinning object, Herschel wasn’t sure what he was looking at was a planet. The British astronomer thought it was a comet or a star.
- In 1781, William Herschel, gave it the name “Georgium Sidus” after King George III. This naming was controversial in the astronomical society, and Uranus (Greek god father of Roman Saturn) was proposed in 1782 to follow the mythology so that it would not stand out from the other planets.
Uranus is a very cold and windy planet. It is surrounded by faint rings, and more than two dozen small moons as it rotates at a nearly 90-degree angle from the plane of its orbit. This unique tilt makes Uranus appear to spin on its side.
Jun 1, 2024 · Uranus, seventh planet in distance from the Sun and the least massive of the solar system’s four giant, or Jovian, planets. Uranus has more than two dozen moons, five of which (Umbriel, Miranda, Ariel, Titania, and Oberon) are relatively large, and a system of narrow rings.
- Uranus was discovered on March 13, 1781, by the English astronomer William Herschel with the aid of a telescope. Uranus is the first planet to be d...
- The mean distance of Uranus from the Sun is nearly 2.9 billion km (1.8 billion miles), more than 19 times as far as Earth, and it never approaches...
- On average, Uranus radiates the same amount of energy as an ideal, perfectly absorbing surface at a temperature of 59.1 kelvins (K; −353 °F, −214 °...
- Uranus has 27 known moons that are accompanied by at least 10 narrow rings. Generally, the rings are located closer to the planet than the moons. S...
- Unlike most planets, the axis of Uranus lies almost parallel to its orbital plane, which means that the planet spins nearly on its side, its poles...
The seventh planet from the Sun with the third largest diameter in our solar system, Uranus is very cold and windy. The ice giant is surrounded by 13 faint rings and 27 small moons as it rotates at a nearly 90-degree angle from the plane of its orbit.
Uranus is the coldest planet of the Solar System and the only planet which spins on its side. It also spins in the opposite direction of most planets. Uranus has 27 moons, but there may be more out there, hidden in its thirteen ring systems.
