Results 41 to 50 of about 40,472 (201)

CHISL: The Combined High-resolution and Imaging Spectrograph for the LUVOIR Surveyor

, 2016
NASA is currently carrying out science and technical studies to identify its next astronomy flagship mission, slated to begin development in the 2020s. It has become clear that a Large Ultraviolet/Optical/IR (LUVOIR) Surveyor mission (primary diameter 12
Fleming, Brian, France, Kevin, Hoadley, Keri   +2 more
core   +1 more source

Anhydrous minerals in asteroid Bennu: Evidence for well‐preserved primordial components

Meteoritics &Planetary Science, EarlyView.
Abstract Aqueously altered carbonaceous astromaterials are dominated by secondary minerals, but a minor fraction of primary, anhydrous silicates and oxides escape alteration, offering insight into the original composition of asteroid parent bodies. We report the mineralogy, petrology, mineral chemistry, and oxygen isotopes of anhydrous minerals—50 ...
S. S. Russell, I. A. Franchi, T. Salge, X. Zhao, R. H. Jones, A. J. King, N. V. Almeida, P. F. Schofield, H. C. Bates, E. A. Cortes‐Calderon, N. Kawasaki, Y. Yurimoto, Y. Marrocchi, G. Libourel, K. Thomas‐Keprta, L. P. Keller, K. Righter, T. J. McCoy, T. J. Zega, J. J. Barnes, A. N. Nguyen, S. Tachibana, H. C. Connolly Jr, D. S. Lauretta   +23 more
wiley   +1 more source

Geophysical investigation of the Santa Marta impact structure—Piauí State, Brazil

Meteoritics &Planetary Science, EarlyView.
Abstract The Santa Marta impact structure in northeastern Brazil, recognized as a partially preserved complex crater, was investigated through an integrated geophysical study employing magnetotelluric (MT) and gravity methods. Our research provides constraints on the crater's subsurface architecture.
Elienara Vasconcelos, João De Oliveira, Marcos Vasconcelos, Martyn Unsworth, Andrea Santos‐Matos, Florivaldo Sena   +5 more
wiley   +1 more source

Araguainha Dome, Brazil: A polygonal impact structure due to a complex pre‐impact regional structural framework

Meteoritics &Planetary Science, EarlyView.
Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes, Wolf U. Reimold, Roger L. Gibson, Julia B. Curto Ma, Adolfo B. Silva, Natalia Hauser   +5 more
wiley   +1 more source

Space station needs, attributes and architectural options study. Volume 1: Executive summary [PDF]

Planetary explorations, Earth observations, space physics, astronomy-astrophysics, solar physics, life/biological/medical sciences, materials processing in space, communications, and technology development are addressed.

core   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, EarlyView.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source

Breakthrough Capability for the NASA Astrophysics Explorer Program: Reaching the Darkest Sky [PDF]

We describe a mission architecture designed to substantially increase the science capability of the NASA Science Mission Directorate (SMD) Astrophysics Explorer Program for all AO proposers working within the near-UV to far-infrared spectrum.
Benson, Scott W., Falck, Robert D., Fixsen, Dale J., Gardner, Joseph P., Garvin, James B., Greenhouse, Matthew A., Kruk, Jeffrey W., Oleson, Stephen R., Thronson, Harley A.   +8 more
core   +1 more source

LETSGO: A spacecraft-based mission to accurately measure the solar angular momentum with frame-dragging

, 2013
LETSGO (LEnse-Thirring Sun-Geo Orbiter) is a proposed space-based mission involving the use of a spacecraft moving along a highly eccentric heliocentric orbit perpendicular to the ecliptic. It aims to accurately measure some important physical properties
Allen, Antia, Appourchaux, Bertotti, Bi, Brown, Chandrasekhar, Damiani, Damour, Davies, De Sitter, Degnan, Desai, Di Mauro, Dicke, Däppen, Epstein, Everitt, Gray, Grenier, Haas, Heimberger, Herbst, Iess, Iorio, Iorio, Israel, Jackson, Kerr, Komm, Kraft, Kraft, L. Iorio, Lange, Lense, Livingstone, Mashhoon, Mashhoon, Merkowitz, Milani, Ni, Nordtvedt, Nowak, Penrose, Pijpers, Pijpers, Pireaux, Richter, Rindler, Roth, Roxburgh, Rozelot, Schiff, Schou, Schäfer, Shapiro, Smith, Soffel, Soffel, Standish, Takata, Tarafdar, Thompson, Thorne, Turyshev, Turyshev, Turyshev, Vigneron, Vrbik, Weiss, Wex, Will, Will, Wolff, Wolff, Yang, Yang   +76 more
core   +1 more source

Potential of VIS‐IR imaging spectroscopy and SEM‐EDS and EMPA to map the mineralogical composition of NWA 7317 (CR6)

Meteoritics &Planetary Science, EarlyView.
Abstract Asteroid compositional analysis relies on comparing reflectance spectra with laboratory data from well‐characterized meteorites. To advance this comparison, we performed a comprehensive laboratory analysis on a slab of the Northwest Africa (NWA) 7317—CR6 carbonaceous chondrite.
Simone Pascucci, Tiberio Cuppone, Martina Casalini, Simone De Angelis, Antonio Lettino, Angelo Palombo, Eliana La Francesca, Gianrico Filacchione, Maria Cristina De Sanctis, Anna Galiano, Giovanni Pratesi   +10 more
wiley   +1 more source

Detection and Characterization of Extrasolar Planets through Doppler Spectroscopy

, 2009
Over 300 extrasolar planets have been found since 1992, showing that planetary systems are common and exhibit an outstanding variety of characteristics.
A. Eggenberger, Adams, Agol, Alibert, Alibert, Alonso, Armitage, Bakos, Baraffe, Baranne, Barge, Barman, Barman, Barnes, Basri, Beaulieu, Beichman, Benz, Bodenheimer, Bonfils, Bonfils, Boss, Bouchy, Bouchy, Bouchy, Bouchy, Bouchy, Broeg, Brown, Brown, Brown, Brunini, Burrows, Burrows, Burrows, Butler, Butler, Butler, Butler, Cameron, Campbell, Campbell, Casertano, Charbonneau, Charbonneau, Charbonneau, Charbonneau, Chiang, Connes, Cowan, Cumming, Cumming, D'Odorico, da Silva, Delfosse, Deming, Deming, Demory, Desidera, Desort, Duquennoy, Eggenberger, Ehrenreich, Endl, Endl, Endl, Endl, Fabrycky, Fischer, Fischer, Fischer, Fischer, Ford, Ford, Fortney, Fortney, Fortney, Frink, Galland, Gaudi, Gillon, Gillon, Gonzalez, Griffin, Grillmair, Gu, Guillot, Halbwachs, Harrington, Hatzes, Henry, Ida, Ida, Ida, Ikoma, Israelian, Johnson, Johnson, Jones, Jorissen, Kasting, Kennedy, Kley, Kley, Knutson, Knutson, Konacki, Kuchner, Laughlin, Lee, Lin, Livio, Loeillet, Lovis, Lovis, Lovis, Marcy, Marcy, Marcy, Marcy, Marcy, Martín, Mayor, Mayor, Mayor, Mazeh, McArthur, McCullough, Murray, Nagasawa, Niedzielski, Noyes, Pasquini, Pasquini, Paulson, Pepe, Pepe, Pepe, Pepe, Perrier, Pinotti, Pinsonneault, Pont, Pont, Pont, Pätzold, Queloz, Queloz, Raghavan, Rasio, Redfield, Rivera, S. Udry, Saar, Saar, Santos, Santos, Santos, Santos, Santos, Santos, Sartoretti, Sato, Seager, Seager, Selsis, Setiawan, Sozzetti, Stepinski, Swain, Takeda, Tamuz, Tinetti, Tinney, Trilling, Udalski, Udalski, Udalski, Udalski, Udry, Udry, Udry, Udry, Valenti, Vidal-Madjar, Vidal-Madjar, von Bloh, Wittenmyer, Wolszczan, Wright, Wright, Wright, Wu, Zucker, Zucker, Zucker   +195 more
core   +2 more sources