Search

Your search keyword '"Orbits"' showing total 251 results
Start Over Descriptor "Orbits" Journal science
251 results on '"Orbits"'

1. The chaotic obliquity of Mars

Author

Touma, Jihad and Wisdom, Jack

Subjects
Orbits, Planets -- Natural history, Mars (Planet), Science and technology, Natural history
Abstract

Numerical integration of the rotation of Mars shows that the obliquity of Mars undergoes large chaotic variations. These variations occur as the system evolves in the chaotic zone associated with [...]

Published
1993

2. The formation of substellar objects induced by the collision of protostellar disks

Author

Laughlin, G., Lin, D.N.C., Bodenheimer, P., and Rozyczka, M.

Subjects
Orbits, Galaxies -- Observations, Stars, Solar system -- Observations, Science and technology, Observations
Abstract

Simulations of a close encounter between two protostars, each surrounded by a relatively massive disk, resulted in the ejection of some of the disk material into a tidal tail A portion of the tail condensed into an object with a mass in the range of 5 to 10 jovian masses. This mechanism may explain the existence of the single objects of substellar mass that have recently been discovered., Tidally interacting or merging galaxies show extended filamentary structures (1). The tails of galaxy NGC 7252, which is thought to be a merger product (2), are excellent examples of these [...]

Published
1998

3. Celestial billiards threaten hit in 2880. (Impact Hazard)

Author

Kerr, Richard A.

Subjects
Orbits, Asteroids, Astronomy -- Observations, Science and technology
Abstract

The first master of gravity, Isaac Newton, saw the solar system as a clockwork machine whose workings depend solely on the mass of the machine's parts and thus their gravitational [...]

Published
2002

4. Planet Probabilities

Subjects
Orbits, Planets, Earth -- Rotation, Science and technology
Abstract

Models of planet formation favor accretion into spheres in protoplanetary disks around young stars. The smaller, rocky planets (Earth-like) would form closer to their central star where the more refractory [...]

Published
2001

5. Comet's Course Hints Mystery Planet

Author

SCHILLING, GOVERT

Subjects
Orbits, Comets, Science and technology
Abstract

A supercomet following an unexpectedly far-flung path around the sun suggests that an unidentified planet once lurked in the outermost reaches of the solar system, an international team of astronomers [...]

Published
2001

6. Two bodies are better than one. (Perspectives: solar system science)

Author

Burns, Joseph A.

Subjects
Orbits, Satellites -- Observations, Eclipsing binaries, Stars, Double -- Observations, Science and technology
Abstract

In 1994, the Galileo spacecraft sighted the tiny moon Dactyl orbiting the asteroid 243 Ida (see panel A in the figure) (1). Since then, nearly 30 binaries have been found [...]

Published
2002

7. Ring laser senses Earth's spin

Author

Hellemans, Alexander

Subjects
Orbits, Gyroscopes -- Innovations, Earth, Science and technology, Innovations
Abstract

The sun will surely rise tomorrow, but it may not rise exactly on schedule. Because tides, atmospheric changes, and perhaps movements in Earth's core are constantly shifting the planet's mass, [...]

Published
1997

8. Do comets get a nudge from the galaxy?

Author

Seife, Charles

Subjects
Orbits, Milky Way -- Observations, Comets, Science and technology, Observations
Abstract

For decades, astronomers have known that most of the comets in the solar system are just rare visitors. Their true home is the Oort cloud, a vast spherical halo of [...]

Published
1996

11. Radar Soundings of the Subsurface of Mars

Author

Picardi, Giovanni, Plaut, Jeffrey J., Biccari, Daniela, Bombaci, Ornella, Calabrese, Diego, Cartacci, Marco, Cicchetti, Andrea, Clifford, Stephen M., Edenhofer, Peter, Farrell, William M., Federico, Costanzo, Frigeri, Alessandro, Gurnett, Donald A., Hagfors, Tor, Heggy, Essam, Herique, Alain, Huff, Richard L., Ivanov, Anton B., Jordan, Rolando L., Kirchner, Donald L., Kofman, Wlodek, Leuschen, Carlton J., Nielsen, Erling, Orosei, Roberto, Pettinelli, Elena, Phillips, Roger J., Plettemeier, Dirk, Safaeinili, Ali, Seu, Roberto, Stofan, Ellen R., Vannaroni, Giuliano, Watters, Thomas R., and Zampolini, Enrico

Published
2005

13. Dynamics of Saturn's Magnetosphere from MIMI during Cassini's Orbital Insertion

Author

Krimigis, S. M., Mitchell, D. G., Hamilton, D. C., Krupp, N., Livi, S., Roelof, E. C., Dandouras, J., Armstrong, T. P., Mauk, B. H., Paranicas, C., Brandt, P. C., Bolton, S., Cheng, A. F., Choo, T., Gloeckler, G., Hayes, J., Hsieh, K. C., Jaskulek, S., Keath, E. P., Kirsch, E., Kusterer, M., Lagg, A., Lanzerotti, L. J., LaVallee, D., Manweiler, J., McEntire, R. W., Rasmuss, W., Saur, J., Turner, F. S., Williams, D. J., and Woch, J.

Published
2005

14. Cassini Magnetometer Observations during Saturn Orbit Insertion

Author

Dougherty, M. K., Achilleos, N., Andre, N., Arridge, C. S., Balogh, A., Bertucci, C., Burton, M. E., Cowley, S. W. H., Erdos, G., Giampieri, G., Khurana, K. K., Leisner, J., Neubauer, F. M., Russell, C. T., Smith, E. J., Southwood, D. J., and Tsurutani, B. T.

Published
2005

15. Radio and Plasma Wave Observations at Saturn from Cassini's Approach and First Orbit

Author

Gurnett, D. A., Kurth, W. S., Hospodarsky, G. B., Persoon, A. M., Averkamp, T. F., Cecconi, B., Lecacheux, A., Zarka, P., Canu, P., Cornilleau-Wehrlin, N., Galopeau, P., Roux, A., Harvey, C., Louarn, P., Bostrom, R., Gustafsson, G., Desch, M. D., Farrell, W. M., Kaiser, M. L., Goetz, K., Kellogg, P. J., Fischer, G., Rucker, H., Alleyne, H., and Pedersen, A.

Published
2005

36. The rotation of Saturn's Hyperion looks chaotic

Author

Kerr, Richard A.

Subjects
Orbits, Satellites, Hyperion (Satellite), Astronomy -- Observations, Science and technology, Observations
Abstract

The Rotation of Saturn's Hyperion Looks Chaotic New observations strongly support the prediction that Saturn's potatoshaped satellite Hyperion is tumbling wildly rather than rotating with a regular, predictable period. The [...]

Published
1985

37. Hipparcos: in the low-orbit blues

Author

Waldrop, M. Mitchell

Subjects
Hipparcos (Artificial satellite), European Space Agency -- Planning, Orbits, Artificial satellites -- Planning, Science and technology, Company business planning, Planning
Abstract

Hipparcos: In the Low-Orbit Blues The European Space Agency's (ESA's) new $300-million Hipparcos astronomy satellite has become a world-class exercise in frustration: after a perfect launch aboard an Ariane 4 [...]

Published
1989

40. Variable Very-High-Energy Gamma-Ray Emission from the Microquasar LS I +61 303

Author

Albert, J., Aliu, E., Anderhub, H., Antoranz, P., Armada, A., Asensio, M., Baixeras, C., Barrio, J. A., Bartelt, M., Bartko, H., Bastieri, D., Bavikadi, S. R., Bednarek, W., Berger, K., Bigongiari, C., Biland, A., Bisesi, E., Bock, R. K., Bordas, P., Bosch-Ramon, V., Bretz, T., Britvitch, I., Camara, M., Carmona, E., Chilingarian, A., Ciprini, S., Coarasa, J. A., Commkhau, S., Contreras, J. L., Cortina, J., Curtef, V., Danielyan, V., Dazzi, F., De Angelis, A., de los Reyes, R., De Lotto, B., Domingo-Santamaria, E., Dorner, D., Doro, M., Errando, M., Fagiolini, M., Ferenc, D., Fernandez, E., Firpo, R., Flix, J., Fonseca, M. V., Font, L., Fuchs, M., Galante, N., Garczarczyk, M., Gaug, M., Giller, M., Goebel, F., Hakobyan, D., Hayashida, M., Hengstebeck, T., Höhne, D., Hose, J., Hsu, C. C., Isar, P. G., Jacon, P., Kalekin, O., Kosyra, R., Kranich, D., Laatiaoui, M., Laille, A., Lenisa, T., Liebing, P., Lindfors, E., Lombardi, S., Longo, F., Lopez, J., López, M., Lorenz, E., Lucarelli, F., Majumdar, P., Maneva, G., Mannheim, K., Mansutti, O., Mariotti, M., Martínez, M., Mase, K., Mazin, D., Merck, C., Meucci, M., Meyer, M., Miranda, J. M., Mirzoyan, R., Mizobuchi, S., Moralejo, A., Nilsson, K., Oña-Wilhelmi, E., Orduña, R., Otte, N., Oya, I., Paneque, D., Paoletti, R., Paredes, J. M., Pasanen, M., Pascoli, D., Pauss, F., Pavel, N., Pegna, R., Persic, M., Peruzzo, L., Piccioli, A., Poller, M., Pooley, G., Prandini, E., Raymers, A., Rhode, W., Ribó, M., Rico, J., Riegel, B., Rissi, M., Robert, A., Romero, G. E., Rügamer, S., Saggion, A., Sánchez, A., Sartori, P., Scalzotto, V., Scapin, V., Schmitt, R., Schweizer, T., Shayduk, M., Shinozaki, K., Shore, S. N., Sidro, N., Sillanpää, A., Sobczynska, D., Stamerra, A., Stark, L. S., Takalo, L., Temnikov, P., Tescaro, D., Teshima, M., Tonello, N., Torres, A., Torres, D. F., Turini, N., Vankov, H., Vitale, V., Wagner, R. M., Wibig, T., Wittek, W., Zanin, R., and Zapatero, J.

Published
2006

Catalog

Books, media, physical & digital resources
See catalog results