Results 71 to 80 of about 2,447 (234)

Nonmagnetic framboid and associated iron nanoparticles with a space-weathered feature from asteroid Ryugu. [PDF]

Nat Commun
Kimura Y, Kato T, Anada S, Yoshida R, Yamamoto K, Tanigaki T, Akashi T, Kasai H, Kurosawa K, Nakamura T, Noguchi T, Sato M, Matsumoto T, Morita T, Kikuiri M, Amano K, Kagawa E, Yada T, Nishimura M, Nakato A, Miyazaki A, Yogata K, Abe M, Okada T, Usui T, Yoshikawa M, Saiki T, Tanaka S, Terui F, Nakazawa S, Yurimoto H, Okazaki R, Yabuta H, Naraoka H, Sakamoto K, Watanabe SI, Tsuda Y, Tachibana S.   +37 more
europepmc   +3 more sources

Ryugu reference project: Recommendations from the measurement definition team

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 819-848, May 2026.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Fracture analysis on asteroid Ryugu [PDF]

, 2023
Fractures in boulders on the Near-Earth-Asteroid Ryugu were mapped and analysed in this work, using image data from the Japanese Hayabusa-2 mission. This resulted in orientation distributions and length distribution of the fractures. The preferred orientation of the fractures is North-South, relative to Ryugu’s equator.
openaire   +1 more source

Derivation of 1.064 μm albedo on the C-type asteroid Ryugu from laser pulse intensity measurement of the Hayabusa2 LIDAR [PDF]

, 2022
Ryuhei Yamada, Keiko Yamamoto, Shoko Oshigami, Hiroshi Araki, Hiroki Senshu, Hirotomo Noda, Noriyuki Namiki, Koji Matsumoto, Fumi Yoshida, Shinsuke Abe, Naru Hirata, Sho Sasaki, Takahide Mizuno   +12 more
openalex   +1 more source

The effect of terrestrial weathering on the mineralogy and petrologic (sub)types of CM chondrites explored by kinetic modeling and laboratory experiments

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 874-897, May 2026.
Abstract Terrestrial weathering alters the chemical and isotopic composition, and mineralogy, of meteorites; its effects on ordinary chondrites are well‐studied, but relatively little is known about the susceptibility of carbonaceous chondrites. We combined laboratory experiments, whereby Chwichiya 002 (C3‐ung find), Murchison (CM2 fall) and Kolang ...
Robin L. Haller, Martin R. Lee, Mark E. Hodson   +2 more
wiley   +1 more source

Variations of the surface characteristics of Ryugu returned samples [PDF]

, 2022
Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean‐Pierre Bibring, C. Pilorget, Vincent Hamm, R. Brunetto, Lucie Riu, Lionel Lourit, D. Loizeau, Tania Le Pivert-Jolivet, Guillaume Lequertier, Aurélie Moussi‐Soffys, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, S. Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Sei‐ichiro Watanabe, Yuichi Tsuda   +29 more
openalex   +1 more source

Ryugu as seen close up by MASCOT [PDF]

, 2019
In October 2018, MASCOT landed on the surface of Ryugu to start a campaign of in-situ measurements. Its brief mission was successful, with the onboard camera revealing the surface of this C-type asteroid in unpre- cedented detail.
Sugita, Seiji, Stephan, Katrin, Roatsch, Thomas, Schmitz, Nicole, Elgner, Stephan, Preusker, Frank, Trauthan, Frank, Koncz, Alexander, Krohn, Katrin, Matz, K.-D., Vincent, Jean-Baptiste, Wagner, Roland, Jaumann, Ralf, Neumann, Wladimir, Mottola, Stefano, Schröder, Stefan, Parekh, Rutu, Michaelis, Harald, Otto, Katharina A.   +18 more
core  

Aqueous alteration in C2‐ung Bells through the analysis of carbonates – Does a CR origin ring true?

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 927-941, May 2026.
Abstract Bells is an ungrouped carbonaceous chondrite that has in recent years been proposed as a CR‐an. This link to CR chondrites has previously been identified through the analysis of anhydrous silicates, for example, oxygen isotopic compositions of olivine (Marrocchi et al., 2023).
L. J. Riches, M. D. Suttle, I. A. Franchi, X. Zhao, M. M. Grady   +4 more
wiley   +1 more source

Nucleosynthetic s-Process Depletion in Mo from Ryugu samples returned by Hayabusa2

, 2023
Initial analyses of samples collected from two locations on the asteroid Ryugu indicated that the mineralogical, chemical, and isotopic characteristics of the Ryugu samples show similarities to carbonaceous chondrites, particularly the Ivuna-type (CI ...
Aléon, J., Onose, M., Tanaka, S., Tanaka, S, Nguyen, A., Yui, H., Nguyen, A, Watanabe, S-I, Saiki, T, Kita, N. T., Haba, M. K., Okazaki, R, Yogata, K, Onose, M, Hoppe, P, Qin, L., Kita, N, T, Yurimoto, H, Gautam, I, Noguchi, T, Komatani, S, Haba, M., Kita, N., Nishimura, M., Huss, G., Liu, M-C, Di Rocco, T., Ichida, K., Qin, L, Bajo, K.-I., Nakai, I., Motomura, K., Fujiya, W, Yamashita, K, Aléon, Jérôme, Moynier, F., Chaussidon, M., Liu, M., Wada, S, Zhang, A-C, Hoppe, P., Krot, A, N, O'D Alexander, C. M., Zhang, A., Davis, A. M., Yoneda, S., Choi, B., Masuda, Y., Watanabe, S.-I., Morita, M, Yin, Q-Z, Liu, M. C., Ireland, T. R., Kawasaki, N., Terada, K., Watanabe, S., Terui, F., Yada, T, Tafla, L, Young, E, D, Fukai, R, Nagashima, K, Pack, A., Bizzarro, M., Yabuta, H., Miyazaki, A, Wada, S., Huss, G. R., Carlson, R., Fujiya, W., Ishikawa, A., Kleine, T, Iizuka, T., Davis, A, M, Choi, B. G., Hibiya, Y., Amari, S., Moynier, F, Abe, Y, Bajo, K-I, Iizuka, T, Yokoyama, T., Abe, M, Wadhwa, M., Piani, L., Park, C, Zhang, A. C., Alexander, C. M. O'D., Abe, Y., Ireland, T., Yui, H, Yamashita, K., Yurimoto, H., Kawasaki, N, Usui, T., Yoneda, S, Okada, T, Choi, B-G, Usui, T, Ichida, K, Nittler, L, Fukai, R., Kleine, T., Nakamura, T, Sakamoto, N, Alexander, C., Yin, Q. Z., Walker, R., Sakamoto, K, Nishimura, M, Terui, F, Terada, K, Chaussidon, Marc, Krot, A. N., Terada, Y., Terada, Y, Nakanishi, N., Morita, M., Davis, A., Yogata, K., Miyazaki, A., Ishikawa, A, Noguchi, T., Amelin, Y, Yabuta, H, Yoshikawa, M., Di Rocco, T, Dauphas, N., Hidaka, H., Amari, S, Nakazawa, S, Yada, T., Pack, A, Abe, M., Russell, S. S., Dauphas, N, Tachibana, S, Krot, A., Tsuda, Y, Haba, M, K, Okada, T., Tsuda, Y., Naraoka, H., Hidaka, H, Choi, B.-G., Okazaki, R., Alexander, C, M O'D, Walker, R. J., Homma, H, Bajo, K. I., Kitajima, K., Komatani, S., Bouvier, A, Wadhwa, M, Nagashima, K., Piani, Laurette, Itoh, S, Carlson, R, W, Ireland, T, R, Motomura, K, Nakato, A, Sakamoto, K., Russell, S., Nakanishi, N, Yoshikawa, M, Nakazawa, S., Naraoka, H, Kitajima, K, Tafla, L., Homma, H., Nakai, I, Tang, H, Sakamoto, N., Zhang, A.-C., Huss, G, R, Saiki, T., Bajo, K., Bouvier, A., Young, D., Amelin, Y., Park, C., Itoh, S., Carlson, R. W., Watanabe, S. I., Nittler, L., Masuda, Y, Gautam, I., Yin, Q.-Z., Liu, M.-C., Russell, S, S, Bizzarro, M, Nakato, A., Tachibana, S., Schönbächler, M., Schönbächler, M, Yokoyama, T, Tang, H., Hibiya, Y, Yin, Q., Walker, R, J, Young, E. D., Nakamura, T.   +201 more
core   +1 more source

Prebiotic Organic Chemistry of Diketopiperazines

Asian Journal of Organic Chemistry, Volume 15, Issue 4, April 2026.
Diketopiperazines (DKPs) are considered essential in many life forms, but their prebiotic importance has not been fully understood. This review aims to discuss prebiotic organic chemistry for experimentally and computationally simulated reactions involving DKPs. ABSTRACT Even though the significance of amino acids and polypeptides is well recognized in
Jun Ohata
wiley   +1 more source