#Ryugu

[malinkymax]

The surface of the asteroid Ryugu, as captured by the Japanese’s spacecraft Hayabusa2 (2018).

[mintypsii]

i love how they're the PRINCES of this kingdom and they're so unphased at their SHIP being STOLEN right in front of them like the soldiers are more concerned than the royalty are

[thepastisalreadywritten]

[netmassimo]

An article published in the journal "Nature Communications" reports the results of tests conducted on samples from the asteroid Ryugu brought back to Earth by the Japanese space agency JAXA's Hayabusa 2 space probe. A team of researchers led by Professor Yuki Kimura of Hokkaido University found traces of the effects probably caused by the bombardment of micrometeorites.

In particular, the technique called electron holography made it possible to discover that the tiny grains called framboids, composed of magnetite, completely lost the magnetic properties they normally have. According to Professor Kimura, this type of study can also be useful for estimating the degradation caused by interplanetary dust on spacecraft.

[srkizer]

[everyonesonthespectrum]

Today’s Autistic character of the day is:

Rena Ryugu from Higurashi no Naku Koro ni (When They Cry)

[unrinconmas]

https://solarsystem.nasa.gov/missions/hayabusa-2/in-depth/

[thepastisalreadywritten]

The surface of the asteroid Ryugu taken by the Japanese spacecraft Hayabusa-2. That pitch black background is so scary.

—

162173 Ryugu, provisional designation 1999 JU3, is a near-Earth object and a potentially hazardous asteroid of the Apollo group.

It measures approximately 900 metres (3,000 ft) in diameter and is a dark object of the rare spectral type Cb, with qualities of both a C-type asteroid and a B-type asteroid.

On 27 June 2018, the Japanese spacecraft Hayabusa2 arrived at the asteroid.

After making measurements and taking samples, Hayabusa2 left Ryugu for Earth on 13 November 2019 and returned the sample capsule to Earth on 5 December 2020.

The samples showed the presence of organic compounds, such as uracil (one of the four components in RNA) and vitamin B3.

[netmassimo]

An article published in the journal "Nature Communications" reports the discovery of uracil, one of the bases of RNA, and niacin, i.e. vitamin B3, in the samples of asteroid Ryugu brought back to Earth by the Japanese Hayabusa 2 space probe. A team of researchers led by Yasuhiro Oba of Japan's Hokkaido University developed an analytical technique to identify compounds in concentrations between parts per billion and parts per trillion to analyze just over 5 grams of samples.

[skycrorg]

Muestras de Ryugu muestran que vida en la Tierra pudo provenir del espacio

Mediante espectrometría de rayos X y otras herramientas de inspección, los investigadores encontraron ejemplos de magnesio hidratado, amonio y fósforo

Un equipo internacional de investigadores con una amplia gama de trayectorias ha encontrado evidencia de que los asteroides proporcionan los compuestos necesarios para que la vida se inicie en la Tierra. En su artículo publicado en la revista Nature Astronomy, el grupo describe su estudio de una pequeña muestra de material recolectado de Ryugu que fue traído de regreso a la Tierra. En 2014, la…

[spacetimewithstuartgary]

A new birthplace for asteroid Ryugu

In December 2020 the space probe Hayabusa 2 brought samples of asteroid Ryugu back to Earth. Since then, the few grams of material have been through quite a lot. After initial examinations in Japan, some of the tiny, jet-black grains traveled to research facilities around the world. There they were measured, weighed, chemically analyzed and exposed to infrared, X-ray and synchroton radiation, among other things. At the MPS, researchers examine the ratios of certain metal isotopes in the samples, as in the current study. Scientists refer to isotopes as variants of the same element that differ only in the number of neutrons in the nucleus. Investigations of this kind can help to understand where in the Solar System Ryugu was formed.

Ryugu's journey through the Solar System

Ryugu is a near-Earth asteroid: Its orbit around the Sun crosses that of Earth (without risk of collision). However, researchers assume that, like other near-Earth asteroids, Ryugu is not native to the inner Solar System, but travelled there from the asteroid belt located between the orbits of Mars and Jupiter. The actual birthplaces of the asteroid belt population are probably even further away from the Sun, outside the orbit of Jupiter.

Ryugu's “family relations” can help shed light on its origin and further evolution. To what degree does Ryugu resemble the representatives of well-known classes of meteorites? These are fragments of asteroids that have made their way from space to Earth. Investigations in recent years have yielded a surprise: Ryugu fits into the large crowd of carbon-rich meteorites, the carbonaceous chondrites, as expected. However, detailed studies of its composition assign it to a rare group: the so-called CI chondrites. These are also known as Ivuna-type chondrites, named after the Tanzanian location where their best-known representative was found. In addition to the Ivuna chondrite itself, only eight others of these exotic specimens have been discovered to date. As their chemical composition is similar to that of the Sun, they are considered to be particularly pristine material that was formed at the outermost edge of the Solar System. “So far, we had assumed that Ryugu's place of origin is also outside Saturn's orbit,” explains MPS scientist Dr. Timo Hopp, co-author of the current study, who has already led earlier investigations into Ryugu's isotopic composition.

The latest analyses by the Göttingen scientists now paint a different picture. For the first time, the team has investigated the ratios of nickel isotopes in four samples of the asteroid Ryugu and six samples of carbonaceous chondrites. The results confirm the close relationship between Ryugu and the CI chondrites. However, the idea of a common birthplace at the edge of the Solar System is no longer compelling. 

A missing ingredient

What had happened? Until now, researchers had understood carbonaceous chondrites as mixtures of three “ingredients” that can even be seen with the naked eye in cross-sections. Embedded in fine-grained rock, round, millimeter-sized inclusions as well as smaller, irregularly shaped inclusions are densely packed together. The irregular inclusions are the first material to have condensed into solid clumps in the hot gas disk that once orbited the Sun. The round silicate-rich chondrules formed later. Until now, researchers have attributed differences in the isotopic composition between CI chondrites and other groups of carbonaceous chondrites to different mixing ratios of these three ingredients. CI chondrites, for example, consist predominantly of fine-grained rock, while their siblings are significantly richer in inclusions. However, as the team describes in the current publication, the results of the nickel measurements do not fit into this scheme.

The researchers' calculations now show that their measurements can only be explained by a fourth ingredient: tiny iron-nickel grains, which must also have accumulated during the formation of the asteroids. In the case of Ryugu and the CI chondrites, this process must have been particularly efficient. “Completely different processes must have been at work in the formation of Ryugu and the CI chondrites on the one hand and the other groups of carbonaceous chondrites on the other,” says Fridolin Spitzer from the MPS, first author of the new study, summarizing the basic idea.

According to the researchers, the first carbonaceous chondrites began to form around two million years after the formation of the Solar System. Attracted by the gravitational force of the still young Sun, dust and the first solid clumps made their way from the outer edge of the gas and dust disk into the inner Solar System, but encountered an obstacle along the way: the newly forming Jupiter. Outside its orbit, the heavier and larger clumps in particular accumulated - and thus grew into carbonaceous chondrites with their many inclusions. Towards the end of this development, after around two million years, another process gained the upper hand: under the influence of the Sun, the original gas gradually evaporated outside Jupiter's orbit leading to the accumulation of primarily dust and iron-nickel grains. This led to the birth of the CI chondrites.

“The results surprised us very much. We had to completely rethink - not only with regard to Ryugu, but also with regard to the entire group of CI chondrites,” says Dr. Christoph Burkhard from the MPS. The CI chondrites no longer appear as distant, somewhat exotic relatives of the other carbonaceous chondrites from the outermost edge of the Solar System, but rather as younger siblings that may have formed in the same region, but through a different process and later. “The current study shows how crucial laboratory investigations can be in deciphering the formation history of our Solar System,” says Prof. Dr. Thorsten Kleine, Director of the Department of Planetary Sciences at the MPS and co-author of the study.

TOP IMAGE: About two million years after the formation of the Solar System, the first carbonaceous chondrites made of dust, chondrules, early condensates and iron-nickel grains agglomerated outside the orbit of the still young Jupiter. About two million years later, the CI chondrites were formed by photoevaporation. They incorporated a particularly large number of iron-nickel grains.   Credit MPS (Fridolin Spitzer)

CENTRE IMAGE: The near-Earth asteroid Ryugu measures about 900 meters in diameter. © JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, Aizu University, AIST

LOWER IMAGE: Microscopic image of rock material from the asteroid Ryugu. The black grains are only a few millimeters in size.   © MPS

BOTTOM IMAGE: Cross-section of the carbonaceous chondrite “Allende”, which fell over Mexico in 1969. Round and irregularly shaped inclusions are clearly visible. © Shiny Things (https://commons.wikimedia.org/wiki/File:Allende_meteorite.jpg), „Allende meteorite“, https://creativecommons.org/licenses/by/2.0/legalcode

[radioshiga]

NASA fornecerá amostras de asteroide para a JAXA

Tóquio, Japão, 6 de junho de 2024 – Agência de Notícias Kyodo – A NASA irá fornecer à sua contraparte japonesa, JAXA (Agência de Exploração Aeroespacial do Japão), amostras coletadas de um asteroide no ano passado. A JAXA espera que a comparação dessas amostras com as coletadas por sua própria sonda em 2019 resulte em novos avanços científicos. A missão OSIRIS-REx da NASA, que se dedica a…

[onetwotwo]

162173 Ryugu

[aardwolfpack]

Why is this so disquieting?

The Surface of an Asteroid in Color The Japanese Hayabusa-2 spacecraft orbited the small asteroid Ryugu for several years, touched down on its surface, collected samples, and is currently on its way back to Earth to deliver them. The spacecraft also carried a camera with multiple colored LED lights, and while it was down collecting samples it also captured this photo with those lights turned on. This, therefore, is a color image of the surface of an asteroid. The field of view is likely a couple meters across.

Keep reading

[nedoliveira1]

Asteroide Ryugu veio das regiões frias do Sistema Solar externo

NOTÍCIAS DO ESPAÇO: Amostras coletadas pela sonda Hayabusa2 da JAXA revelam que o asteroide Ryugu é um viajante cósmico que veio das regiões frias do sistema solar externo. Ele é um objeto híbrido, que combina características dos asteroides e dos cometas.

O asteroide Ryugu é um objeto próximo da Terra, que orbita o Sol a uma distância semelhante à da Terra, mas que começou sua vida muito mais longe, nas regiões frias do sistema solar externo. Essa conclusão foi baseada na análise de grãos de poeira coletados do asteroide pela sonda Hayabusa2 da Agência de Exploração Aeroespacial do Japão (JAXA), que visitou Ryugu em 2019 e retornou com as amostras…