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Kuiper with a kilometer radius sky body first appeared – one, process, residue, found, Dacheng – Science and Technology Daily



2019-01-30 02:55:16 Source: Technology Daily

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Science and Technology Daily, Beijing, January 29 (Reporter Liu Xia) According to the US Daily Science website 28, scientists predicted more than 70 years ago that there were small objects with a radius of 1 km up to several kilometers on the edge of the solar system. but not observed. Now, for the first time, Japanese astronomers have discovered the celestial body with a 1.3-kilometer radius in the Kuiper band, filling in the "missing link" in planetary creation.

The Kuiper Belt is a small collection of celestial bodies outside the orbit of Neptune, and the object of Kuiper's belt is considered to be the remnant of the formation of the solar system, helping scientists understand the beginning of planetary formation. Scientists predict that Kuiper belt should be celestial bodies with a radius of 1 to a few kilometers, which is an important part of the planetary process. But even the world's leading telescopes, such as the Japanese Subaru telescope, are too far, too small, too dark to be directly observed.

With this in mind, the team of the OASES team, hosted by the Japanese National Astronomical Observatory Matsushita, placed two 28 cm diamonds in Miyako's open-air school in Miyakojima. Small telescopes using occult techniques (observing many stars and observing the shadows created by the celestial body through one of the stars) are monitored by about 2000 stars for 60 hours and found this New Sky body with a 1.3-kilometer radius.

The results of the study show that Kuiper belt is much larger in kilometers than previously thought. In addition, this discovery is also confirmed by a model in which the stars first grow slowly over a kilometer-sized object and then grow and assemble the planets.

Matsuzaka said the team would conduct a more detailed study of Kuiper's belt and plan to focus on the celestial bodies in the Orte Nebula outside the Kuiper belt.





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