It takes about two centuries to discover the existence of asteroids, but a thousand years for comets. However, that was not until the second half of the twentieth centuryAnd Century so we begin to understand their nature and their origin. The revolution of. We know the ESA is going to do better with the study And comet 67P / Tchourioumov-Guérassimenko.It also helped us to observe them more meticulously during that time, especially its wonderful work
Participated in Hayabusa 2 mission at Cnes Ryugu. © Cnes
Three traces of Ryuku’s appearance
First data aboutHowever, it was somewhat surprising and led to the proposition of some hypotheses to calculate them. The asteroid has the shape of a rotating surface that can explain itself well if it adopts the shape of equilibrium in response to a rapid rotation. All that was left was to calculate this rapid rotation.
To understand the shape of its balance, it is necessary to know that Ryu found that it could be thought of as a pile of ruins made of small pieces of rock and objects.The single rock is held together by gravity rather than by rock. One way to explain it is that in fact the fragments that form during a collision between two asteroids will slowly merge under their own gravitational pull (Ryuquin’s size is approximately 920 meters).
Another data provided by the mission, the small celestial body is surprisingly richOrganic.
(162173) All these parts of the mystery of Ryu’s identity and origin have been reconnected in a completely different way by a research team led by Hitoshi Miura. Nagoya City UniversityIn Japan, in the open access article .
Astronomers have developed a new model that better calculates all of Ryuku’s views and concludes that it is a dead comet, i.e. what’s left of it when such an object approaches it again and again in a particular orbit.Its volatile matter is almost exhausted – mostly water ice.
A dirty snowball shrinks
Display formed withIdeologically simple by Hitoshi Miura and his colleagues Aiso Nakamura and Tak Gunihiro from the University of Okayama in Japan. If Ryugu was actually a comet, the chocolate chips would melt on the surface and many times evaporate compared to ice. The nails will accumulate at the end of the glaze and come together at the bottom of the container containing the initial mixture.
As it evaporates, the size of the comet decreases, which changes the moment of its recession as a skater brings his hands together. SecurityLead to get her Accelerate when its size decreases.
The researchers’ model calculates this type of spinning top caused by the calculated rotational speed. Via FromBecause the comet initially formed in cold regions rich in volatile organic matter, Ryugu appears to be more carbonaceous than other asteroids studied from Earth by spectroscopy.
Objects in the shape of a rotating top and pile, according to a report by the University of Nagoya with published scientific workWith high organic content such as Ryugu and Bennu (work goal) Comet-asteroid transformation (CAT) objects. ” Gates are small objects that were once active comets but are dead and indistinguishable from asteroids. “Hitoshi explains who adds Miura:” Due to their similarities with comets and asteroids, CATs can provide new information about our solar system “.