Results 131 to 140 of about 1,059 (171)

Variability of dB/dt in the African Sector During Solar Cycle 24—Implications for Geomagnetically Induced Currents

Space Weather, Volume 24, Issue 8, August 2026.
Abstract This paper quantitatively characterizes dB/dt peaks at four African equatorial‐ and low‐latitude stations, along latitudinal and local‐time gradients across different phases of selected geomagnetic storms. We investigate dB/dt response for intense geomagnetic storms, Dst ≤ −100 nT observed during solar cycle 24 over four stations in the ...
Wuraola E. Oyegunle, C. M. Ngwira, A. O. Akala, E. O. Oyeyemi, B. Olugbon, O. J. Oyedokun, P. O. Amaechi   +6 more
wiley   +1 more source

An ultra-short-period super-Earth with an extremely high density and an outer companion. [PDF]

Sci Rep
Livingston JH, Gandolfi D, Trani AA, Herath M, Barragán O, Hatzes A, Luque R, Fukui A, Nowak G, Palle E, Hellier C, Fridlund M, de Leon J, Hirano T, Narita N, Albrecht S, Dai F, Deeg H, Van Eylen V, Korth J, Tamura M.   +20 more
europepmc   +1 more source

Reassessing the organic carbon budget in the Murchison meteorite through an extraction–recovery mass‐balance approach

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1729-1741, August 2026.
Abstract A substantial fraction of organic carbon in carbonaceous chondrites has long been described as “missing,” reflecting incomplete recovery and limited resolution of operationally defined organic components. Here, we present a quantitative reassessment of the carbon budget in the Murchison meteorite using an integrated extraction–recovery mass ...
Hina Dohi, Minako Hashiguchi, Koichi Mimura   +2 more
wiley   +1 more source

Author Correction: The geology and evolution of the Near-Earth binary asteroid system (65803) Didymos. [PDF]

Nat Commun
Barnouin O, Ballouz RL, Marchi S, Vincent JB, Agrusa H, Zhang Y, Ernst CM, Pajola M, Tusberti F, Lucchetti A, Daly RT, Palmer E, Walsh KJ, Michel P, Sunshine JM, Rizos JL, Farnham TL, Richardson DC, Parro LM, Murdoch N, Robin CQ, Hirabayashi M, Kahout T, Asphaug E, Raducan SD, Jutzi M, Ferrari F, Hasselmann PHA, CampoBagatin A, Chabot NL, Li JY, Cheng AF, Nolan MC, Stickle AM, Karatekin O, Dotto E, Della Corte V, Mazzotta Epifani E, Rossi A, Gai I, Deshapriya JDP, Bertini I, Zinzi A, Trigo-Rodriguez JM, Beccarelli J, Ivanovski SL, Brucato JR, Poggiali G, Zanotti G, Amoroso M, Capannolo A, Cremonese G, Dall'Ora M, Ieva S, Impresario G, Lavagn M, Modenini D, Palumbo P, Perna D, Pirrotta S, Tortora P, Zannoni M, Rivkin AS.   +62 more
europepmc   +1 more source

Visible, near‐, and thermal infrared spectra of asteroid Bennu samples: Relationship to and implications for remote sensing of carbonaceous asteroids

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1788-1805, August 2026.
Abstract Remote spectroscopy is used to characterize the mineralogy and infer the history of planetary bodies. Carbonaceous asteroids, such as B‐type (101955) Bennu, represent the earliest stages of planet formation. B types have a blue (negative) spectral slope and comprise <5% of asteroids.
V. E. Hamilton, E. A. Cloutis, R. E. Milliken, P. Haenecour, D. R. Golish, K. J. Domanik, T. J. McCoy, L. P. Keller, A. A. Simon, H. H. Kaplan, C. A. Goodrich, S. A. Sandford, D. Applin, T. Hiroi, D. H. Hill, N. G. Lunning, F. M. McCubbin, S. A. Eckley, C. J. Snead, E. H. Blumenfeld, J. E. Aebersold, C. Schultz, N. Bowles, K. A. Shirley, S. S. Russell, J. J. Barnes, T. J. Zega, D. N. DellaGiustina, A. J. Ryan, D. P. Glavin, J. P. Dworkin, H. C. Connolly Jr., D. S. Lauretta   +32 more
wiley   +1 more source

Biomaterials for organically generated habitats beyond Earth. [PDF]

Sci Adv
Wordsworth R, Quayum R, Kocharian E, Pearson A, Portillo X, Yang M, Cockell CS, Nangle S, Church G.   +8 more
europepmc   +1 more source

Advanced aqueous alteration in primitive meteorites: Micro‐ to nanoscale studies of CR1 iron sulfides

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1806-1825, August 2026.
Abstract This study documents micro‐ to nanoscale observations of primary nebular and secondary parent body iron sulfides in the CR1 GRO 95577. Despite the extensive alteration of the bulk sample, some primary sulfides managed to avoid alteration, having originally formed in the solar nebula during chondrule formation by either fission‐sulfidization or
S. A. Singerling
wiley   +1 more source

Reply to Root-Bernstein: Increasing complexity allows for the pervasiveness of low-complexity entities and is not anthropocentric. [PDF]

Proc Natl Acad Sci U S A
Wong ML, Bartlett S, Cleland CE, Demarest H, Cleaves HJ, Prabhu A, Lunine JI, Hazen RM.   +7 more
europepmc   +1 more source

LifeMet: Report on the 2024–2025 meteorite recovery expedition in Dronning Maud Land, Antarctica for the study of microbe–meteorite interactions

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1847-1860, August 2026.
Abstract Since the discovery of nine meteorites near the Yamato mountains in 1969, Antarctica has been recognized as a superb location for meteorite recovery. While Antarctic recovery expeditions prioritize meteorite preservation for mineralogical and planetary studies, meteorites are not typically collected for biological applications.
Rachael Lappan, Rachel S. Kirby, Andrew G. Tomkins   +2 more
wiley   +1 more source

The role of composition in the spectral evolution of carbonaceous asteroids as informed by Bennu sample return

Meteoritics &Planetary Science, Volume 61, Issue 8, Page 1875-1904, August 2026.
Abstract Near‐Earth rubble‐pile asteroids Bennu and Ryugu are part of the carbonaceous taxonomic complex (C‐complex), and samples returned from both bodies resemble the most aqueously altered carbonaceous chondrites. However, telescopic and spacecraft visible–near infrared (VIS–NIR) reflectance spectra of Ryugu exhibit a red (positive) spectral slope ...
Ralph E. Milliken, Takahiro Hiroi, Victoria E. Hamilton, Cody D. Schultz, Ed A. Cloutis, Hannah H. Kaplan, Melissa K. Kontogiannis, Nathalia Vega‐Santiago, Dani N. DellaGiustina, Harold C. Connolly Jr., Dante S. Lauretta   +10 more
wiley   +1 more source