20 things about Uranus


1. Uranus is the seventh planet from the Sun and the third largest in the Solar System, after Jupiter and Saturn;

2. A unique aspect of Uranus is its axis, which is not perpendicular to the elliptical plane, but almost parallel to it; when the space probe Voyager 2 passed beside it, Uranus's southern pole was facing the Sun;

3. Uranus is the first planet discovered in modern times, observed by astronomer William Herschel on March 13, 1781; he initially thought Uranus was a comet;

4. Uranus was named after the Greek god of heaven;

5. The average distance between Uranus and the Sun is 2.9 billion km, being 19 times farther from the Sun than the Earth;

6. Although it has a larger diameter than Neptune (Uranus - 51,000 km, Neptune - 49,500 km), Uranus has a smaller mass than it; is 14.5 times heavier than the Earth

7. One day on Uranus it takes 17 hours, and a complete rotation around the Sun (one year) takes place in 84 years;

8. The atmosphere of Uranus is made up of hydrogen (83%), helium (15%), methane (2.3%) and other elements;

9. Uranus has 27 natural satellites, named after the characters of William Shakespeare (Cordelia, Ofelia, Bianca, Cressida, Desdemonda, Juliet, Ariel, Oberon etc);

10. The largest satellites of Uranus are Oberon and Titania;

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11. Like Jupiter and Saturn, Uranus is surrounded by rings, 13 in number; they have thicknesses between 0.1 and 15 km and widths of 1-17.000 km;

12. The average Uranus temperature is -216 degrees Celsius, being the coldest planet in the Solar System;

13. The only space probe to visit Uranus is Voyager 2, which passed in 1986, at a distance of 81,500 km;

14. Uranus is a frozen giant, consisting of a mixture of ice, rock, hydrogen and helium; is believed to have a small core of iron and magnesium silicate;

15. Because of the strange axis and the way it is spinning, in some areas of the planet it can be night for a period of up to 40 years;

16. Uranus is the second least dense planet after Saturn;

17. Uranus is two times farther from the Sun than its neighbor, Saturn;

18. The pale blue color of the planet is due to the presence of methane in the atmosphere;

19. The Uranus magnetic field is not centered, but is inclined almost 60 degrees to the axis of rotation;

20. Uranus is barely visible to the naked eye, but with a binocular or telescope it is easy to find if you know where to look;

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