There is an appointment in the starry sky 丨 Pluto rushed on the 20th day, observe this "dwarf planet" to welcome the good opportunity

Poster production: Feng Juan

Xinhua News Agency, Tianjin, July 18 (Reporter Zhou Runjian) Astronomical popular science experts introduced that on July 20, Pluto rushed to the sun. In a light -free environment, astronomical enthusiasts interested in my country can try to observe this mysterious planet that is rare on weekdays with a large -caliber astronomical telescope.

In 1846, Neptune was discovered by humans. After discovering the Neptune for a while, people discovered that the existence of Neptune was not enough to explain the duster of the Dato Star's track, and once again hoped that the possibility of a farther unknown planet was once again. In 1930, due to a lucky coincidence, Americans Claid Tangbo discovered the celestial body that was subsequently called Pluto.

This is the clearest Pluto photo (partial) taken by the National Aerospace Administration "New Vision" detector. (Picture Source of the National Aeronautics and Space Administration)

With the continuous development of science and technology, scientists suddenly have the latest interpretation of planet positioning in the solar system.

Yan Weiguo, executive vice chairman of the Tianjin Astronomical Society and an astronomical popular science expert, said that on August 24, 2006, the 26th conference of the International Astronomical Federation voted to vote for the final result of the definition of the planet of the solar system. According to this new planet definition, Pluto, one of the traditional "nine planets" as planets, is no longer included in the "dwarf planet". Although he was "downgraded", Pluto was still talked about by many astronomical enthusiasts. Every year, he did not forget to pay attention to where this "dwarf planet" went.

Pluto in the comics. Production: Hu Yanzhu

Pluto rushes to the sun, which means that Pluto runs to the earth and the sun is roughly line with the earth and the sun, and the earth happens to be a astronomical phenomenon between the sun and Pluto. "Pluto is the brightest when it is in the sun, and it is generally an excellent time to observe it." Yan Weiguo said.

The dwarf planet does not glow, and it is completely reflected in the sun. Because Pluto is far away from the sun, the brightness is not very high. "During this day, Pluto's brightness was 14.3, which was located in the horses. A few days before the 20th, the sun fell every day, and Pluto would rise from the East Horizon, which can be seen almost all night." Yan Weiguo said.

This is Pluto (left) shot by the National Aeronautics and Space Agency's "New Perspective" detector and its satellite guards. (Picture Source of the National Aeronautics and Space Administration)

Although the ranks of the "Nine Planets" were expelled, Pluto is still one of the planets that astronomers and enthusiasts are keen to explore. On July 14, 2015, the US "New Perspective" detector flew over Pluto at a close range, becoming the first human detector to detect this distant "dwarf planet", and passed the photos of Pluto and its satellites. The mysterious veil of Pluto. "With the continuous progress of science and technology, more advanced detectors will run to Pluto in the future to help humans further unveil the secrets of this mysterious planet." Yan Weiguo said.

[Editor in charge: Zhou Chuqing]

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