Results 11 to 20 of about 1,838 (234)

Thermophysical Investigation of Asteroid Surfaces. II. Factors Influencing Grain Size [PDF]

The Planetary Science Journal, 2022
Asteroid surfaces are subjected to mechanical weathering processes that result in the development and evolution of regolith. Two proposed mechanisms—impact bombardment and thermal fatigue—have been proposed as viable and dominant weathering processes ...
Eric M. MacLennan, Joshua P. Emery
doaj   +3 more sources

Sulfide minerals bear witness to impacts across the solar system [PDF]

Nature Communications
Sulfide minerals are ubiquitous in extraterrestrial sample collections and serve as a unique record of the microstructural and chemical characteristics resulting from exposure to interplanetary space on airless planetary surfaces.
Michelle S. Thompson, Jemma Davidson, Devin L. Schrader, Thomas J. Zega   +3 more
doaj   +2 more sources

Isolating the mechanisms for asteroid surface refreshing

Icarus, 2023
Evidence is seen for young, fresh surfaces among Near-Earth and Main-Belt asteroids even though space-weathering timescales are shorter than the age of the surfaces. A number of mechanisms have been proposed to refresh asteroid surfaces on short timescales, such as planetary encounters, YORP spinup, thermal degradation, and collisions.
Francesca E. DeMeo, Michaël Marsset, David Polishook, Brian J. Burt, Richard P. Binzel, Sunao Hasegawa, Mikael Granvik, Nicholas A. Moskovitz, Alissa Earle, Schelte J. Bus, Cristina A. Thomas, Andrew S. Rivkin, Stephen M. Slivan   +12 more
openaire   +4 more sources

Low thermal inertia of carbonaceous asteroid Bennu driven by cracks observed in returned samples [PDF]

Nature Communications
Thermal inertia is used to infer physical properties of asteroid surfaces. The carbonaceous asteroid Bennu has low thermal inertia suggestive of a surface covered in sub-centimeter rock fragments.
A. J. Ryan, R.-L. Ballouz, R. J. Macke, T. Ishizaki, A. Alasli, J. Biele, S. A. Eckley, C. G. Hoover, K. Jardine, A. J. King, C. P. Opeil, M. Pajola, F. Tusberti, J. J. Barnes, H. C. Bates, E. L. Berger, E. B. Bierhaus, C. Calva, S. Cambioni, F. Cheng, M. Delbo, D. N. DellaGiustina, J. P. Dworkin, C. M. Elder, J. P. Emery, J. Freemantle, R. Fujita, D. P. Glavin, C. Gonzalez, P. Haenecour, V. E. Hamilton, R. D. Hanna, L. T. J. Hanton, R. Harrington, A. R. Hildebrand, D. H. Hill, K. Ishimaru, E. R. Jawin, M. K. Kontogiannis, N. G. Lunning, T. J. McCoy, J. L. Molaro, M. Montoya, H. Nagano, E. W. O’Neal, J. Plummer, K. Righter, N. Sakatani, P. Sánchez, P. F. Schofield, M. A. Siegler, S. Tanaka, T. J. Zega, C. W. V. Wolner, H. C. Connolly, D. S. Lauretta   +55 more
doaj   +2 more sources

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

Nature Communications
Images collected during NASA’s Double Asteroid Redirection Test (DART) mission provide the first resolved views of the Didymos binary asteroid system.
Olivier Barnouin, Ronald-Louis Ballouz, Simone Marchi, Jean-Baptiste Vincent, Harrison Agrusa, Yun Zhang, Carolyn M. Ernst, Maurizio Pajola, Filippo Tusberti, Alice Lucchetti, R. Terik Daly, Eric Palmer, Kevin J. Walsh, Patrick Michel, Jessica M. Sunshine, Juan L. Rizos, Tony L. Farnham, Derek C. Richardson, Laura M. Parro, Naomi Murdoch, Colas Q. Robin, Masatoshi Hirabayashi, Tomas Kahout, Erik Asphaug, Sabina D. Raducan, Martin Jutzi, Fabio Ferrari, Pedro Henrique Aragao Hasselmann, Adriano CampoBagatin, Nancy L. Chabot, Jian-Yang Li, Andrew F. Cheng, Michael C. Nolan, Angela M. Stickle, Ozgur Karatekin, Elisabetta Dotto, Vincenzo Della Corte, Elena Mazzotta Epifani, Alessandro Rossi, Igor Gai, Jasinghege Don Prasanna Deshapriya, Ivano Bertini, Angelo Zinzi, Josep M. Trigo-Rodriguez, Joel Beccarelli, Stavro Lambrov Ivanovski, John Robert Brucato, Giovanni Poggiali, Giovanni Zanotti, Marilena Amoroso, Andrea Capannolo, Gabriele Cremonese, Massimo Dall’Ora, Simone Ieva, Gabriele Impresario, Michèle Lavagn, Dario Modenini, Pasquale Palumbo, Davide Perna, Simone Pirrotta, Paolo Tortora, Marco Zannoni, Andrew S. Rivkin   +62 more
doaj   +2 more sources

Fast boulder fracturing by thermal fatigue detected on stony asteroids [PDF]

Nature Communications
Spacecraft observations revealed that rocks on carbonaceous asteroids, which constitute the most numerous class by composition, can develop millimeter-to-meter-scale fractures due to thermal stresses.
A. Lucchetti, S. Cambioni, R. Nakano, O. S. Barnouin, M. Pajola, L. Penasa, F. Tusberti, K. T. Ramesh, E. Dotto, C. M. Ernst, R. T. Daly, E. Mazzotta Epifani, M. Hirabayashi, L. Parro, G. Poggiali, A. Campo Bagatin, R.-L. Ballouz, N. L. Chabot, P. Michel, N. Murdoch, J. B. Vincent, Ö. Karatekin, A. S. Rivkin, J. M. Sunshine, T. Kohout, J.D.P. Deshapriya, P.H.A. Hasselmann, S. Ieva, J. Beccarelli, S. L. Ivanovski, A. Rossi, F. Ferrari, C. Rossi, S. D. Raducan, J. Steckloff, S. Schwartz, J. R. Brucato, M. Dall’Ora, A. Zinzi, A. F. Cheng, M. Amoroso, I. Bertini, A. Capannolo, S. Caporali, M. Ceresoli, G. Cremonese, V. Della Corte, I. Gai, L. Gomez Casajus, E. Gramigna, G. Impresario, R. Lasagni Manghi, M. Lavagna, M. Lombardo, D. Modenini, P. Palumbo, D. Perna, S. Pirrotta, P. Tortora, M. Zannoni, G. Zanotti   +60 more
doaj   +2 more sources

Ejecta distribution and momentum transfer from oblique impacts on asteroid surfaces [PDF]

, 2021
NASA’s Double Asteroid Redirection Test (DART) mission will impact its target asteroid, Dimorphos, at an oblique angle that will not be known prior to the impact.
Raducan, Sabina-Denisa, Davison, T.M., Collins, G.S., Davison, TM, Raducan, SD, Collins, GS   +5 more
core   +1 more source

THERMAL TOMOGRAPHY OF ASTEROID SURFACE STRUCTURE [PDF]

The Astrophysical Journal, 2016
ABSTRACT Knowledge of the surface thermal inertia of an asteroid can provide insight into its surface structure: porous material has a lower thermal inertia than rock. We develop a means to estimate thermal inertia values of asteroids and use it to show that thermal inertia appears to increase with spin period in the case of main-belt ...
Harris, Alan, Drube, Line
openaire   +3 more sources

The unexpected surface of asteroid (101955) Bennu [PDF]

Nature, 2019
NASA'S Origins, Spectral Interpretation, Resource Identification and Security-Regolith Explorer (OSIRIS-REx) spacecraft recently arrived at the near-Earth asteroid (101955) Bennu, a primitive body that represents the objects that may have brought prebiotic molecules and volatiles such as water to Earth1.
Lauretta, D.S., DellaGiustina, D.N., Bennett, C.A., Golish, D.R., Becker, K.J., Balram-Knutson, S.S., Barnouin, O.S., Becker, T.L., Bottke, W.F., Boynton, W.V., Campins, H., Clark, B.E., Connolly, H.C., d'Aubigny, C.Y. Drouet, Dworkin, J.P., Emery, J.P., Enos, H.L., Hamilton, V.E., Hergenrother, C.W., Howell, E.S., Izawa, M.RM., Kaplan, H.H., Nolan, M.C., Rizk, B., Roper, H.L., Scheeres, D.J., Smith, P.H., Walsh, K.J., Wolner, C.WV., Highsmith, D.E., Small, J., Vokrouhlicky, D., Bowles, N.E., Brown, E., Hanna, K.L. Donaldson, Warren, T., Brunet, C., Chicoine, R.A., Desjardins, S., Gaudreau, D., Haltigin, T., Millington-Veloza, S., Rubi, A., Aponte, J., Gorius, N., Lunsford, A., Allen, B., Grindlay, J., Guevel, D., Hoak, D., Hong, J., Schrader, D.L., Bayron, J., Golubov, O., Sanchez, P., Stromberg, J., Hirabayashi, M., Hartzell, C.M., Oliver, S., Rascon, M., Harch, A., Joseph, J., Squyres, S., Richardson, D., McGraw, L., Ghent, R., Binzel, R.P., Al Asad, M.M., Johnson, C.L., Philpott, L., Susorney, H.CM., Cloutis, E.A., Hanna, R.D., Ciceri, F., Hildebrand, A.R., Ibrahim, E-M., Breitenfeld, L., Glotch, T., Rogers, A.D., Ferrone, S., Thomas, C.A., Fernandez, Y., Chang, W., Cheuvront, A., Trang, D., Tachibana, S., Yurimoto, H., Brucato, J.R., Poggiali, G., Pajola, M., Dotto, E., Epifani, E. Mazzotta, Crombie, M.K., Lantz, C., de Leon, J., Licandro, J., Rizos Garcia, J.L., Clemett, S., Thomas-Keprta, K., Van Wal, S., Yoshikawa, M., Bellerose, J., Bhaskaran, S., Boyles, C., Chesley, S.R., Elder, C.M., Farnocchia, D., Harbison, A., Kennedy, B., Knight, A., Martinez-Vlasoff, N., Mastrodemos, N., McElrath, T., Owen, W., Park, R., Rush, B., Swanson, L., Takahashi, Y., Velez, D., Yetter, K., Thayer, C., Adam, C., Antreasian, P., Bauman, J., Bryan, C., Carcich, B., Corvin, M., Geeraert, J., Hoffman, J., Leonard, J.M., Lessac-Chenen, E., Levine, A., McAdams, J., McCarthy, L., Nelson, D., Page, B., Pelgrift, J., Sahr, E., Stakkestad, K., Stanbridge, D., Wibben, D., Williams, B., Williams, K., Wolff, P., Hayne, P., Kubitschek, D., Barucci, M.A., Deshapriya, J.DP., Fornasier, S., Fulchignoni, M., Hasselmann, P., Merlin, F., Praet, A., Bierhaus, E.B., Billett, O., Boggs, A., Buck, B., Carlson-Kelly, S., Cerna, J., Chaffin, K., Church, E., Coltrin, M., Daly, J., Deguzman, A., Dubisher, R., Eckart, D., Ellis, D., Falkenstern, P., Fisher, A., Fisher, M.E., Fleming, P., Fortney, K., Francis, S., Freund, S., Gonzales, S., Haas, P., Hasten, A., Hauf, D., Hilbert, A., Howell, D., Jaen, F., Jayakody, N., Jenkins, M., Johnson, K., Lefevre, M., Ma, H., Mario, C., Martin, K., May, C., Mcgee, M., Miller, B., Miller, C., Miller, G., Mirfakhrai, A., Muhle, E., Norman, C., Olds, R., Parish, C., Ryle, M., Schmitzer, M., Asphaug, E., Ballouz, R-L., Burke, K.N., Chojnacki, M., Dean, D., Drozd, K., Gardner, A., Habib, N., Koelbel, L., Kreiner, J., Lambert, D., Malhotra, R., Munoz, R., Schwartz, S.R., Selznick, S., Sutton, S., Dickinson, C., Caplinger, M., Wren, P., Bernacki, M., Munoz, D. Pino, Sandford, S.A., Barker, M., Berry, K., Castro, N., Garvin, J., Getzandanner, K., Glavin, D., Hyde, K., Lim, L.F., Mazarico, E.M., Moreau, M., Neumann, G., Reuter, D.C., Simon, A.A., Wasser, M., Johnston, G., Burton, A., Keller, L.P., Messenger, S., Righter, K., Gardner, S., Wright, B., Molaro, J.L., Palmer, E.E., Siegler, M.A., Weirich, J.R., Ireland, T., Bland, P., Christensen, P.R., Haberle, C.W., Rozitis, B., Beddingfield, C.B., Brack, D.N., French, A.S., Jawin, E.R., Mccoy, T.J., Russell, S., Bandfield, J.L., Clark, B.C., Daly, M.G., Seabrook, J.A., Craft, K., Daly, R.T., Ernst, C., Espiritu, R.C., Nair, A.H., Nguyen, L., Perry, M.E., Steele, R., Edmundson, K., Milazzo, M., Delbo, M., Michel, P., Thuillet, F., Marty, B.   +275 more
openaire   +5 more sources

Surface Properties of Near-Sun Asteroids

The Planetary Science Journal, 2022
Abstract Near-Earth asteroids (NEAs) with small perihelion distances reach subsolar temperatures of ≥1000 K. They are hypothesized to undergo “supercatastrophic” disruption, potentially caused by near-Sun processes such as thermal cracking, spin-up, meteoroid impacts, and subsurface volatile release, all of which are likely to cause ...
Carrie E. Holt, Matthew M. Knight, Michael S. P. Kelley, Quanzhi 泉 志 Ye 叶, Henry H. Hsieh, Colin Snodgrass, Alan Fitzsimmons, Derek C. Richardson, Jessica M. Sunshine, Nora L. Eisner, Annika Gustaffson   +10 more
openaire   +4 more sources