Results 101 to 110 of about 50,771 (302)

Breakup of a long-period comet as the origin of the dinosaur extinction

Scientific Reports, 2021
The origin of the Chicxulub impactor, which is attributed as the cause of the K/T mass extinction event, is an unsolved puzzle. The background impact rates of main-belt asteroids and long-period comets have been previously dismissed as being too low to ...
Amir Siraj, Abraham Loeb
doaj   +1 more source

Dynamical evolution of V-type photometric candidates in the outer Main-belt

, 2014
V-type asteroids, characterized by two absorption bands at 1.0 and 2.0 $\mu m$, are usually thought to be portions of the crust of differentiated or partially differentiated bodies.
Carruba, Valerio, Domingos, Rita Cassia, Huaman, Mariela E.   +2 more
core   +1 more source

Origins of colors variability among C-cluster main-belt asteroids [PDF]

, 2021
P. Beck, O. Poch
semanticscholar   +1 more source

MAIN BELT ASTEROIDS WITH WISE/NEOWISE. I. PRELIMINARY ALBEDOS AND DIAMETERS [PDF]

, 2011
We present initial results from the Wide-field Infrared Survey Explorer (WISE), a four-band all-sky thermal infrared survey that produces data well suited for measuring the physical properties of asteroids, and the NEOWISE enhancement to the WISE mission
J. Masiero, A. Mainzer, T. Grav, J. Bauer, R. Cutri, J. Dailey, P. Eisenhardt, R. Mcmillan, T. Spahr, M. Skrutskie, D. Tholen, R. Walker, E. L. Wright, E. DeBaun, E. DeBaun, D. Elsbury, D. Elsbury, T. Gautier, S. Gomillion, S. Gomillion, A. Wilkins, A. Wilkins   +21 more
semanticscholar   +1 more source

3D SR‐μXCT analysis for lithology detection: Application to Ryugu sample A0159

Meteoritics &Planetary Science, Volume 60, Issue 11, Page 2623-2654, November 2025.
Abstract Extraterrestrial breccia samples are formed through impact‐related processes that combine the fragments of distinct lithologies. As such, they are valuable indicators of the complex formation and evolution history of planetesimals in our solar system.
Léna Jossé, Zélia Dionnet, Alice Aléon‐Toppani, Rosario Brunetto, Andrew King, Emmanuel Gardés, Eva Heripré, Damien Loizeau, Sasha Cryan, Kentaro Hatakeda   +9 more
wiley   +1 more source

Detection of Hydration on Nominally Anhydrous S-complex Main Belt Asteroids

The Planetary Science Journal
We present the results of a survey of nominally anhydrous main belt S-complex asteroids. Thirty-three observations of 29 unique asteroids were obtained using the IRTF+SpeX instrument in prism and LXD short modes.
Maggie McAdam, Cristina Thomas, Lauren McGraw, Andrew Rivkin, Joshua Emery   +4 more
doaj   +1 more source

Expected spectral characteristics of (101955) Bennu and (162173) Ryugu, targets of the OSIRIS-REx and Hayabusa2 missions

, 2018
NASA's OSIRIS-REx and JAXA's Hayabusa2 sample-return missions are currently on their way to encounter primitive near-Earth asteroids (101955) Bennu and (162173) Ryugu, respectively.
Alí-Lagoa, V., Campins, H., de León, J., De Prá, M., DellaGiustina, D. N., Lauretta, D. S., Licandro, J., Lorenzi, V., Morate, D., Pinilla-Alonso, N., Popescu, M., Rizos, J. L.   +11 more
core   +1 more source

Accretion and Differentiation of Vesta and the Mesosiderite Parent Body Inferred From Ni Stable Isotope Compositions

Geophysical Research Letters, Volume 52, Issue 19, 16 October 2025.
Abstract We present high‐precision Ni stable isotope data for mesosiderites, eucrites, and diogenites to investigate the accretion and differentiation of asteroid 4 Vesta. Ni isotope variations in eucrites and diogenites are dominated by kinetic diffusion and chondritic contamination, rendering them unsuitable for reconstructing Vesta's primitive Ni ...
Ke Zhu, Makiko K. Haba, Qi Chen, Lu Chen
wiley   +1 more source

Metapopulation‐scale resilience to disease‐induced mass mortality in a keystone predator: From stasis to instability

Ecosphere, Volume 16, Issue 10, October 2025.
Abstract Mass mortality from disease epidemics challenges the resistance and resilience of populations and communities. Assessing the impacts and consequences of such events is crucially dependent on long‐term datasets. In 2013–2016, sea star wasting disease (SSWD) caused population‐wide crashes of the archetypal keystone species, the sea star Pisaster
Sarah A. Gravem, Bruce A. Menge
wiley   +1 more source

Insights on the Rotational State and Shape of Asteroid (203) Pompeja from TESS Photometry

The Planetary Science Journal
The Main Belt asteroid (203) Pompeja shows evidence of extreme variability in visible and near-infrared spectral slope with time. The observed spectral variability has been hypothesized to be attributed to spatial variations across Pompeja’s surface.
Oriel A. Humes, Josef Hanuš
doaj   +1 more source