Scientists Discover Rare Extraterrestrial Mineral in Asteroid Fragments

Two grains from the asteroid Ryugu, brought to Earth by the Hayabusa2 mission, contain minerals that are older than anything found on Earth. These grains offer a unique glimpse into the early Solar System, untouched by Earth’s harsh conditions. An X-ray analysis of the samples, which were collected ... [More info]

Asteroiden Bennu und Ryugu sind „Brüder“. Beide Erdbahnkreuzer könnten aus dem gleichen Mutterasteroiden entstanden sein. #Asteroiden #Bennu #Ryugu #Asteroid #Sonnensystem
https://www.scinexx.de/news/kosmos/asteroiden-bennu-und-ryugu-sind-brueder/
Asteroiden Bennu und Ryugu sind „Brüder“

Getrennte Brüder: Die Asteroiden Bennu und Ryugu kreisen heute weit voneinander entfernt, könnten aber den gleichen Ursprung haben. Sie entstanden

scinexx | Das Wissensmagazin
JWST Spectroscopy of (142) Polana - Connection to NEAs (101955) Bennu and (162173) Ryugu: https://iopscience.iop.org/article/10.3847/PSJ/ade395 -> SwRI study supports theory that asteroids #Bennu and #Ryugu are part of the Polana family: https://www.swri.org/newsroom/press-releases/swri-study-supports-theory-asteroids-bennu-ryugu-are-part-of-the-polana-family #asteroids
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A mysterious mineral in asteroid Ryugu may rewrite planetary history

A surprising discovery from a tiny grain of asteroid Ryugu has rocked scientists' understanding of how our Solar System evolved. Researchers found djerfisherite—a mineral typically born in scorching, chemically reduced conditions and never before seen in Ryugu-like meteorites—inside a sample returned by Japan’s Hayabusa2 mission. Its presence suggests either Ryugu once experienced unexpectedly high temperatures or that exotic materials from other parts of the solar system somehow made their way into its formation. Like discovering a palm tree fossil in Arctic ice, this rare find challenges everything we thought we knew about primitive asteroids and the early mixing of planetary ingredients.

ScienceDaily
🪨 Une découverte surprise dans l'astéroïde Ryugu : un grain rare de djerfisherite, formé à haute température, révèle une histoire plus complexe que prévue.
🔗 https://www.futura-sciences.com/sciences/actualites/espace-astronomes-ne-y-attendaient-pas-ce-grain-retrouve-cet-asteroide-ne-devrait-pas-etre-ca-change-tout-123221/
#Ryugu #Djerfisherite #Astéroïde #ExplorationSpatiale #FuturaSciences
Les astronomes ne s’y attendaient pas : ce grain retrouvé sur cet astéroïde ne devrait pas être là et ça change tout

Une découverte minérale inattendue dans un échantillon de l’astéroïde Ryugu vient bousculer notre compréhension des débuts du Système solaire. Un minéral rare y a été détecté, alors qu’il ne devrait pas s’y trouver. Il révèle une histoire plus complexe que prévu pour cet astéroïde primitif. À la clé : de nouvelles hypothèses sur la dynamique des jeunes corps célestes et sur la nature même des astéroïdes carbonés.

Futura
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
Japan succeeds in rapid identification of rocks on asteroids using AI

A University of Tokyo team achieved the feat with an AI-based rock identification tool that was fed information on rocks on Earth and other celestial bodies.

The Japan Times

Hayabusa, l'expérience analogique.

#hayabusa2 #ryugu #woodcut #woodcutting

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/

ISASニュース | 宇宙科学研究所

宇宙科学研究所
SciTech Chronicles. . . . . . . . .Feb 18th, 2025

  Science is an attempt to remove our emotions and ego from reality. Vol II No 44 330 links Curated Deposits found on an asteroid point to s...

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.