2023-12-24 03:05:03
Halley’s Comet photographed by the European Space Agency’s Giotto spacecraft in 1986. Captured by NASA
[Dong Xiaojie/Comprehensive Foreign News]Chinese astronomy experts pointed out that Halley’s Comet, which triggered the “comet fever” in 1986, arrived at aphelion (the farthest point from the sun) in early December this year and has now turned back and embarked on its return journey to the solar system. It is expected that It will be visible following perihelion in July 2061, that is, following another 37 to 38 years.
China’s The Paper reported on the 23rd that Lai Dihui, a member of the Chinese Astronomical Society and director of the Tianjin Astronomical Society, said that Halley is the first periodic comet discovered and recorded by humans. In 613 BC, the ancient classic “Spring and Autumn” recorded that “there is a star entering the Beidou” “, “Star” is Halley’s Comet.
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Lai Dihui said that Halley’s Comet is not only the first periodic comet discovered and recorded by humans, but also the only short-period comet currently known that can be directly seen with the naked eye. Its cycle returns every approximately 76.1 years.
The last time Halley’s Comet returned was in 1986, and it is estimated to pass perihelion on July 28, 2061. Under the influence of solar radiation, people can see its broom-like head, coma, tail and other structures.
However, Lai Dihui also said that the orbit of comets often changes due to the gravitational influence of large planets, so the precise time when Halley’s Comet passes perihelion is still variable. In any case, Halley’s Comet is on its way back, and following a patient and long countdown of 37 to 38 years, it will return to human sight.
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