What are Some Prominent Features of Uranus?
Uranus, one of the eight planets in the solar system, is the seventh planet in the solar system from the inside out (18.37 ~ 20.08 astronomical units). Its volume ranks third in the solar system (larger than Neptune) and fourth in mass (less than Neptune), orbiting almost horizontally around the sun.
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Uranus physical properties
- Uranus in the infrared
- Uranus does not have a rock core like Saturn and Jupiter, and its metal composition is distributed throughout the crust in a relatively even state. Observing directly to the naked eye, Uranus' surface is magenta, which is caused by its methane atmosphere absorbing most of the red spectrum.
Uranus visibility
- From 1995 to 2006, the apparent magnitude of Uranus was between +5.6 and +5.9 , barely above the +6.0 magnitude visible to the naked eye. His angular diameter was 3.4 to 3.7 arc seconds ; compared to Saturn's 16 to 20 arc Seconds, Jupiter is 32 to 45 arc seconds. When rushing, Uranus can be directly seen with the naked eye in the dark, light-free polluted sky, and can be easily seen with binoculars even in cities. Using a large amateur astronomical telescope with an objective diameter of 15 to 25 cm, Uranus will have a pale dark blue disk shape and obvious peripheral dimness; for a diameter of 25 cm or larger, cloud patterns and some large satellites, such as Both Titania and Oberon can see.
Uranus exploration
- Main article: Uranus exploration
- In 1986, NASA's Voyager 2 visited Uranus. This visit is the only close-range survey, and there is no new survey plan. Voyager 2 was launched in 1977. Voyager 2 studied the structure and chemical composition of Uranus' atmosphere and discovered 10 new satellites. It also studied the unique climate caused by the tilt of the rotation axis of 97.77 °, and observed the ring system of Uranus. He also studied the magnetic field of Uranus. He made the first detailed investigation of the five largest satellites, studied the nine-ring halo known at the time, and also discovered two new halos.
Uranus News
- According to the British Daily Mail, it may be difficult to divert the attention of a wealthy and celebrities from the star-studded banquet to the scientific community, but it is not completely impossible. Recently, the latest progress made by scientists in the research of Neptune and Uranus may attract their attention-Neptune and Uranus may be covered with a large sea of liquid diamonds, and there are large ice-shaped solid bodies floating on the sea. diamond.
- After conducting a series of experiments, the scientists reached the above conclusion and thought that the discovery might help explain some of the strange characteristics of the two planets. In one of the experiments, researchers examined the change in diamonds by placing them in the same high-temperature and high-pressure environment as on Neptune. Neptune has a pressure of 11 million times the earth's zero altitude and a temperature of 50,000 degrees Celsius.
- The experimental results show that when the pressure increases to 11 million times the zero altitude, the diamond becomes liquid; after the temperature is increased to 50,000 degrees Celsius, some liquid diamonds will become solid again. Strangely enough, these solid diamonds float on top of liquid diamonds, like a "diamond iceberg."
- Scientists believe that the statement of the diamond ocean explains the mystery of the tilt of the magnetic poles of Neptune and Uranus, whose magnetic poles are about 60 degrees from the geographic pole. In addition, this also explains why 10% of the surface composition of Neptune and Uranus is carbon. [6]