The reason for the unnaturally long and thin shape of `` Oumuamua '' that jumped out to the spaceship theory of extraterrestrial life with an interstellar astronomical object that came from the outside of the solar system for the first time in history was found
'
Tidal fragmentation as the origin of 1I / 2017 U1 ('Oumuamua) | Nature Astronomy
https://www.nature.com/articles/s41550-020-1065-8
New formation theory explains the mysterious interstellar object 'Oumuamua
https://phys.org/news/2020-04-formation-theory-mysterious-interstellar-oumuamua.html
New origin story of 'Oumuamua interstellar visitor does not involve aliens | Live Science
https://www.livescience.com/interstellar-object-oumuamua-origins-tidal-disruption.html
Oumuamua was discovered by Dr. Rob Weryk, a postdoctoral fellow at the Institute of Astronomy at the University of Hawaii (IfA). From its strange orbit, it became clear that it was not an asteroid or comet existing in the solar system, and it was confirmed to be the first celestial body to fly from outside the solar system. The details of the discovery of Oumuamua, which was called 'A / 2017 U1' at the beginning of the discovery, are summarized in the following article, and it should convey the surprise and delight of the researchers.
`` We've been waiting for this day for decades, '' confirming a mysterious celestial body thought to have come from outside the solar system-GIGAZINE
Subsequent investigations revealed that Oumuamua had a cigar-shaped elongated shape with a 'reddish-grey' surface, and it was a dense celestial body made of rock and metal with no water or ice. It was clear. Furthermore, based on the low frequencies observed from Oumuamua, there is a rumor that 'intelligent life forms exist behind Aumuamua', which will attract more public attention.
However, researchers concluded that the spacecraft theory of extraterrestrials was 'very unlikely'.
Is the mysterious celestial body 'Oumuamua' flying from outside the solar system a spacecraft made by extraterrestrial life? -GIGAZINE
by European Southern Observatory / M. Kornmesser
The latest study, published in the scientific journal Nature Astronomy on April 13, 2020, advocated the world's first comprehensive answer to the mystery of 'How Aum Amua was formed and where it came from?' doing. The paper was written by Yun Chang, who works at the National Astronomical Observatory of the Chinese Academy of Sciences, and Douglas N. C. Lin, an emeritus professor of astronomy and astrophysics at the University of California, Santa Cruz, two of which are from Oumuamua. It explains that the characteristic shape is due to ' tidal force '.
They used computer simulation to simulate the formation theory of Aum Amua, and explained that the mother body from which Aum Amua was formed was shaped into a long, narrow cigar by the tidal force. Alin said, `` An interstellar object such as Oumuamua is a fragmented object due to the effect of tidal force when a star and a parent object (of an interstellar object) approach each other, and then it was ejected into the interstellar space. I'm guessing. '
'Oumuamua is a completely different object from the solar system. Even scientists wonder if it might be an extraterrestrial spacecraft because of its dry surface, unusually elongated shape, and incomprehensible movement.' Oumuamua is a celestial body with a truly mysterious shape, but it is clear that it is a natural object because of its color and no radio emission, 'he said, saying that Oumuamua is an extraterrestrial spacecraft. I deny it again.
'Our aim is to come up with a comprehensive theory that can piece together all the revealed clues, based on well-understood physical phenomena,' Lin said. We proudly said that we were able to present the world's first comprehensive formation theory of Aum Amua.
When a small object passes near a large object, tidal forces can tear the surface of the small object. This is theoretically the same as the phenomenon that occurred in the famous comet 'Comet Shoemaker-Levy 9 ' due to its collision with Jupiter in 1994. Mr. Chan and Mr. Lin explained that the current Oumuamua was formed when Oumuamua's mother body also passed near some large mass object.
To confirm this theory, the two perform a high-resolution computer simulation to model the structural dynamics of celestial bodies passing near the planet. As a result of the simulation, they have found that the celestial body breaks up into very elongated fragments like Oumuamua, and is ejected into the interstellar space. In addition, “The heat diffusion process that occurs during the tidal force-induced destruction of the celestial body consumes a large amount of volatile substances on the celestial body, which explains the color of the surface of Oumuamua and the lack of water,” said Chan. It is a logical hypothesis that
It should be noted that, from the results of the simulation, the long-period comets and HoshiAmane disk , Super-Earth also has become clear that there is a possibility that the 'debris of parrots Am A size of celestial bodies' is formed from a celestial body such as.
In his paper, Chan supported “a large number of estimates for Aum Amua. Interstellar objects such as Aum Amua could pass through the habitable zone , thus creating substances that can produce life ( Panspermia). theory there is also a possibility to carry). study of Oumuamua is a very new field, interstellar celestial body is formed so as to how the planetary system, there is also likely to provide important clues about how to evolve, 'said I am talking.
In addition, Mr. Lin said that although Oumuamua is a rare astronomical object that came from outside the solar system, more interstellar objects will be discovered in the future, saying that there should be more interstellar objects in outer space. I'm looking forward to it. The Hubble Space Telescope has already succeeded in capturing the second interstellar astronomical object 'Comet Borisov' in observation history.
Hubble Space Telescope succeeds in shooting the second `` interstellar object '' in observation history-GIGAZINE
Related Posts:
in Science, Posted by logu_ii