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Using artificial intelligence technology, a University of Tokyo team has managed to rapidly identify from photographs the size, location and shape of some 200,000 rocks on two asteroids. https://www.japantimes.co.jp/news/2025/04/08/japan/science-health/japan-ai-technology-asteroid-rocks/?utm_medium=Social&utm_source=mastodon #japan #sciencehealth #ai #space #asteroids #hayabusa #ryugu #universityoftokyo

Hayabusa, l'expérience analogique.

#hayabusa2 #ryugu #woodcut #woodcutting

Tirage sur papier d'une gravure sur panneau de bois représentant la surface de l'astéroïde Ryugu

A new edition of JAXA's #ISASNews newsletter has come out, sharing stories from the Institute of Space and Astronautical Science.

We put together short summaries in English! 🛰️ The first story is on results from the analysis of asteroid #Ryugu, brought home by the #Hayabusa2 mission.

And if these are tantalisingly epic, you can wrestle down the full stories (in Japanese) here: https://www.isas.jaxa.jp/outreach/isas_news/

What we learned from the Ryugu grains by Tachibana Shogo, University of Tokyo.
It’s been four years since the Hayabusa2 mission delivered grains from asteroid Ryugu to Earth. Classified as a C-type asteroid, Ryugu was expected to contain water trapped in hydrated minerals as well as organic matter. Their presence would indicate that the asteroid had not experienced wide-spread heating, and so information about the very early Solar System when the asteroid first formed would be preserved. Analysis of the grains revealed the presence of past liquid water in the form of hydrated minerals, carbonates, iron sulphide and magnetite which require reactions with water to form. The carbonates precipitated from the water approximately 4 million years after the birth of the Solar System, making the minerals on Ryugu older than those on Earth!

Immersing the Ryugu grains in solvents and analysing the dissolved compounds has revealed over 20,000 organic species. When liquid water existed on Ryugu shortly after formation, molecules were being built that could become the building blocks for life. Around twenty types of amino acid have been found in the Ryugu grains, which are essential to life on Earth. Many molecules can exist as two mirrored forms, referred to as the “chirality” or “left and right handedness”. But while Earth life uses only left-handed molecules, the chirality of the Ryugu amino acids have been found in roughly equal abundance, suggesting production via non-biological mechanisms. The composition of Ryugu resembles that of the Sun and CI chondrite meteorites. Less than 10 CI chondrites have ever been found on Earth. This can be explained by the fragility of the Ryugu grains, which would disintegrate upon entering the Earth’s atmosphere, never reaching the ground. The CI chondrites that have been discovered are weathered and changed by the Earth’s water. The Ryugu grains are therefore one of the best representations of the chemical composition of our Solar System out of all extraterrestrial samples. Our Astromaterials Science Research Group (ASRG) has therefore started the “Ryugu Reference Project” to determine the chemical composition in detail. (For the full article and references, please refer to ISAS News.)

SciTech Chronicles. . . . . . . . .Feb 18th, 2025

https://bit.ly/stc021825

#Ryugu #salt #precipated #sodium #solar-wind #beryllium-10 #interstellar #heliosphere #LIDAR #Zapotec #Guiengola #Tehuantepec #AI #decode #aphasia #converter #Ba3SiO5 #ruthenium #ammonia #mixed-anion

A new paper also from the other asteroid sample return misson: https://academic.oup.com/mnras/article/537/1/127/7945217?login=false = Photometry of (162173) #Ryugu and its artificial crater as inferred by Hayabusa2/ONC images.

Nature Astronomy's current issue: Ryugu galore, Mars aplenty, and a pinch of Cosmology - with the cover image by yours truly!

https://www.nature.com/natastron

#PlanetaryScience #Cosmology #Ryugu #Mars #science #STEM #Astrodon

A screen capture of the current issue of the Nature Astronomy journal as featured on their webpage.

Researchers from Imperial College London have discovered that a #space-returned sample from #asteroid #Ryugu was rapidly colonized by terrestrial microorganisms, even under stringent #contamination control measures.
Results of the study determined that terrestrial biota had rapidly colonized the extraterrestrial material, even under strict contamination control (opened in nitrogen in a class 10,000 clean room).
https://phys.org/news/2024-11-ryugu-asteroid-sample-rapidly-colonized.html

Shocking Discovery of Earth Bacteria Inside Ryugu Asteroid Samples + Other Updates - YouTube
https://www.youtube.com/watch?v=mO46CNftRDs

#Asteroids #Ryugu #Biology

Bacteria found in asteroid sample – but they're not from space

https://www.newscientist.com/article/2457490-bacteria-found-in-asteroid-sample-but-theyre-not-from-space/

> The unexpected discovery of microbial life in a piece of rock from an asteroid shows how hard it is to avoid contaminating samples brought back to Earth

#space #science #ryugu

a photo of bacteria. it isn't clear if this is the bacteria that colonized the asteroid sample, or a stock photo.

Ten years after its launch, Hayabusa2 is continuing its journey through space to search for clues to the origins of life and water on Earth. https://www.japantimes.co.jp/news/2024/12/03/japan/science-health/japan-hayabusa-2-ten-years/?utm_medium=Social&utm_source=mastodon #japan #sciencehealth #hayabusa2 #jaxa #space #asteroids #ryugu

https://www.unexplained.ie/article/1079-alien-life-from-asteroid-was-contaminated-sample-ryugu-japan-hayabusa-two/ #space #alienLife #alien #asteroid #japan #Hayabusa2 #Ryugu #unexplainedie #unexplained

Chalk this one up to 'Life, uh, finds a way' and the seeming impossibility of creating an utterly sterile location on Earth

https://phys.org/news/2024-11-ryugu-asteroid-sample-rapidly-colonized.html

#Space #Ryugu

#Asteroid #Ryugu (and closely related CI-chondrites) may have its origin closer to the Sun than previously thought: not beyond #Saturn, but near #Jupiter. #mpsgoettingen scientists report on measurements of Ryugu’s nickel isotope composition in @ScienceAdvances. Read more here: https://www.mps.mpg.de/a-new-birthplace-for-asteroid-ryugu?c=6775 Link to paper: https://www.science.org/doi/10.1126/sciadv.adp2426

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.

#MPS:

"Ein neuer Geburtsort für Asteroid Ryugu

Proben des Asteroiden Ryugu sorgen erneut für eine Überraschung – und stellen bisherige Vorstellungen von der Entstehung kohlenstoffreicher Asteroiden in Frage."

https://www.mps.mpg.de/ein-neuer-geburtsort-fuer-asteroid-ryugu?c=2728

27.9.2024

#Astronomie #Asteroid #Hayabusa2 #kohligeChondrite #Nickel #Raumsonde #Ryugu #Sonnensystem

[SummerNews #5 ] For the first time, large-scale #PAHs (polycyclic aromatic hydrocarbons) (> 50 #carbon atoms) have been discovered in a carbonaceous #asteroid sample: #Ryugu 👍 👏

Brought back by the #Hayabusa2 mission from JAXA, this sample was the subject of a unique #surface mass spectrometry technique based on two-stage #laser desorption/ionization, available on the #AROMA device at IRAP.

Details+ : https://www.irap.omp.eu/en/2024/08/large-interstellar-polycyclic-aromatic-molecules-discovered-in-asteroid-ryugu/

Direct detection of large aromatic molecules in a sample from asteroid Ryugu using a two-stage laser desorption/ionization technique coupled with mass spectrometry

[ActuEstivale #5] Pour la première fois, des #PAH (hydrocarbures aromatiques polycycliques) de grande taille (> 50 atomes de #carbone) ont été découverts dans un échantillon d' #astéroïde carboné : #Ryugu 👍 👏

Rapporté par la mission #Hayabusa2 de la JAXA, cet échantillon a fait l'objet d'une technique unique de #spectrométrie de masse de surface basée sur la désorption/ionisation #laser en deux étapes, disponible sur le dispositif #AROMA à l’IRAP..

Infos+ : https://www.irap.omp.eu/2024/08/decouverte-de-grandes-molecules-aromatiques-polycycliques-interstellaires-dans-lasteroide-ryugu/

Détection directe de grandes molécules aromatiques dans un échantillon de l’astéroïde Ryugu par une technique de désorption/ionisation laser en deux étapes couplée à la spectrométrie de masse.

[#BackOnline 💫] Rendez-vous dès demain mardi pour notre récap' des actus de l'été 👀 Un petit aperçu ci-après ... 🤩 🧐

L'impact environnemental des activités astronomiques, la magnétosphère de #Jupiter à l'ère de la sonde Juno, les récentes découvertes de BepiColombo autour de #Mercure, le survol de la Terre et de la Lune par la sonde #Juice, la découverte de grandes molécules aromatiques polycycliques interstellaires au sein de l’astéroïde #Ryugu ...

Stay tuned 😍

"Sample of asteroid (162173) Ryugu retrieved by Hayabusa2 sample return mission. At about 10 mm long, this fragment (ID C9000(CXL)) is the largest particle registered in the Ryugu Sample Database."

ISAS/JAXA, CC BY 4.0, via Wikimedia Commons.

#ryugu

The #evolution of #organic #material on #Asteroid 162173 #Ryugu and its delivery to #Earth https://www.nature.com/articles/s41467-024-50004-w

Studies of samples of asteroid Ryugu returned by the Hayabusa-2 mission show that the action of water and organic material on carbonaceous asteroids lead to the widespread occurrence of micron-sized #polymeric organic particles encapsulating clays and biological relevant #molecules.

**NEWS: Asteroid #Bennu contains life-sustaining resources. Analysis of the Bennu sample returned by NASA’s OSIRIS-REx reveals dust rich in carbon, nitrogen, and phosphates, all essential components for sustaining life. Similar to JAXA's #Ryugu sample.

https://www.nasa.gov/missions/osiris-rex/surprising-phosphate-finding-in-nasas-osiris-rex-asteroid-sample/

#Ryugu

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