Results 21 to 30 of about 36,921 (31)

Astronomic Telescope Facility: Preliminary systems definition study report. Volume 2: Technical description [PDF]

The Astrometric Telescope Facility (AFT) is to be an earth-orbiting facility designed specifically to measure the change in relative position of stars.
Sobeck, Charlie
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The triaxial ellipsoid dimensions, rotational pole, and bulk density of ESA Rosetta target asteroid (21) Lutetia

, 2010
We seek the best size estimates of the asteroid (21) Lutetia, the direction of its spin axis, and its bulk density, assuming its shape is well described by a smooth featureless triaxial ellipsoid, and to evaluate the deviations from this assumption ...
A. Conrad, B. Carry, Barucci, Barucci, Belskaya, Birlan, Bowell, C. Dumas, C. R. Chapman, Carry, Carry, Chapman, Chapman, Clark, Conan, Conrad, Consolmagno, DeMeo, Drummond, Drummond, Drummond, Drummond, Fienga, Flynn, Fujiwara, Gaffey, H. A. Weaver, J. C. Christou, J. D. Drummond, Kryszczyńska, Lazzarin, Lazzarin, Lazzarin, Macke, Magri, Magri, McCord, Morrison, Mueller, Mugnier, Nedelcu, P. M. Tamblyn, Perna, Rivkin, Rivkin, Shepard, Tedesco, Torppa, Vernazza, Vernazza, W. J. Merline, Weaver, Zellner   +52 more
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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
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Microlensing path parametrization for Earth-like Exoplanet detection around solar mass stars

, 2018
We propose a new parametrization of the impact parameter u0 and impact angle {\alpha} for microlensing systems composed by an Earth-like Exoplanet around a Solar mass Star at 1 AU.
de Almeida, L., Nascimento Jr, J. -D. do
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Earth and Terrestrial Planet Formation

, 2015
The growth and composition of Earth is a direct consequence of planet formation throughout the Solar System. We discuss the known history of the Solar System, the proposed stages of growth and how the early stages of planet formation may be dominated by ...
Agnor, Alexander, Allègre, Becker, Bitsch, Blum, Bottke, Bottke, Brasser, Briceño, Bryden, Carballido, Castillo-Rogez, Castillo-Rogez, Chambers, Chambers, Chambers, Chambers, Chambers, Chambers, Chapman, Cohen, Crida, Crida, Cuzzi, Cuzzi, D'Angelo, Dauphas, DeMeo, DeMeo, Dubrulle, Elkins-Tanton, Fernandez, Fischer, Goldreich, Gomes, Gomes, Greenberg, Haisch, Halliday, Hansen, Ida, Ida, Ida, Ikoma, Iwasaki, Izidoro, Jacobsen, Jacobson, Jacobson, Jin, Johansen, Johansen, Kita, Kley, Kley, Kobayashi, Kobayashi, Kokubo, Kokubo, Kokubo, Lambrechts, Lambrechts, Lambrechts, Laskar, Levison, Levison, Levison, Levison, Levison, Levison, Lin, Lissauer, Lécuyer, Malhotra, Mamajek, Marchi, Marchi, Marty, Masset, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morbidelli, Morishima, Muralidharan, Murray-Clay, Nagasawa, Nakagawa, Nesvorný, Nesvorný, Nimmo, O'Brien, O'Brien, Okuzumi, Ormel, Owen, Papaloizou, Papaloizou, Pfalzner, Pierens, Pierens, Pollack, Raymond, Raymond, Ryder, Ryder, Safronov, Snellgrove, Strom, Taylor, Tera, Thommes, Touboul, Tsiganis, Villeneuve, Wada, Wada, Wada, Walker, Walsh, Walsh, Walsh, Walsh, Ward, Weidenschilling, Weidenschilling, Weidenschilling, Weiss, Wetherill, Wetherill, Wetherill, Wetherill, Whipple, Yin, Youdin, Youdin, Zhou, Zsom, Ćuk, Ćuk   +145 more
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Research in particles and fields [PDF]

The astrophysical aspects of cosmic rays and gamma rays and the radiation and electromagnetic field environment of the Earth and other planets are investigated.
Davis, L., Jr., Mewaldt, R. A., Prince, T. A., Stone, E. C.   +3 more
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Starshade Rendezvous Probe [PDF]

The Starshade Rendezvous Probe Mission (https://smd-prod.s3.amazonaws.com/science-red/s3fs-public/atoms/files/Starshade2.pdf ) [1] will be the first space-based, high-contrast imaging mission with the potential to detect and characterize Earth-like ...
Booth, Jeff, Greenhouse, Matt, Kasdin, N. Jeremy, Lisman, Doug, Macintosh, Bruce, Seager, Sara, Shaklan, Stuart, Vess, Melissa, Warwick, Steve, Webb, David   +9 more
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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
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The Nature of Scientific Proof in the Age of Simulations

, 2014
Is numerical mimicry a third way of establishing truth?Comment: Published in American Scientist: Volume 102, Number 3, Pages 174 to 177 (http://www.americanscientist.org/issues/pub/2014/3/the-nature-of-scientific-proof-in-the-age-of ...
Heng, Kevin
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NASA Science4Girls and Their Families: Connecting Local Libraries with NASA Scientists and Education Programs to Engage Girls in STEM [PDF]

NASA Science4Girls and Their Families (NS4G) partners NASA Science Mission Directorate (SMD) education programs with public libraries to provide hands-on science, technology, engineering, and math (STEM) activities and career information for girls and ...
Bleacher, L. V., Hauck, K., Meinke, B., Soeffing, C., Spitz, A.   +4 more
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