w88 casino News Network (Reporter Huang Wei)2006Year11month6日19Point sharp, a lecture on Pluto’s downgrade hosted by w88 casino’s astronomy club in Ningyuan Building526Held in room. The Astronomical Society also invited the director and researcher of the Beijing Planetarium, a member of the International Astronomical Union’s Small Celestial Object Nomination Committee, and the Vice Chairman of the Beijing Astronomical Society, BeijingUFOZhu Jin, vice chairman of the research association and editor-in-chief of "Astronomy Enthusiasts" magazine, attended the International Astronomical Union Congress in Prague and voted to downgrade Pluto.
at2006Year8month24日At the International Astronomical Union Congress, it was called one of the nine planets in the solar system70After many years of being downgraded, Pluto was finally “expelled” from the planet family. Therefore, this celestial body at the edge of the solar system will only be called a "dwarf planet" along with some other celestial bodies of similar size. Zhu Jin mentioned that Pluto has been quite controversial since its discovery. Scientists currently believe that it belongs to the Kuiper Belt Object (The Kuiper Belt is the boundary of the solar system we currently know and is the source of most comets in the solar system), although it orbits the sun, it does not qualify as a "planet". Zhu Jin explained the reasons for the "downgrade" of Pluto: First, there are no rules for naming celestial bodies; secondly, celestial bodies larger than Pluto have been discovered. If no measures are taken, it will cause trouble in naming newly discovered celestial bodies. The "downgrade" of Pluto can provide convenience for naming new celestial bodies. At the same time, at the International Astronomical Union Congress, scientists also gave a new definition to planets. Zhu Jin pointed out that the modification of the definition of planet may have an impact on the naming of solar system objects, revision of textbooks, planetary motion and people's daily life.
Finally, the Astronomy Club also left time for questions from the audience. The students were very enthusiastic about asking experts for advice. Zhu Jin answered the students’ questions about zodiac signs one by oneUFOand other questions.
