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Science
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Disponibilidad
| Institución detectada | Período | Navegá | Descargá | Solicitá |
|---|---|---|---|---|
| No detectada | desde mar. 1997 / hasta dic. 2023 | Science Journals |
Información
Tipo de recurso:
revistas
ISSN impreso
0036-8075
ISSN electrónico
1095-9203
Editor responsable
American Association for the Advancement of Science (AAAS)
País de edición
Estados Unidos
Fecha de publicación
1880-
Cobertura temática
Tabla de contenidos
Pesky Perchlorates All Over Mars
Richard A. Kerr
<jats:p>Curiosity rover has discovered perchlorates in equatorial Gale crater, implying that they carpet the martian surface and explaining why the rover stumbled in its first search for organic traces of ancient martian life.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 138-138
The Mystery of Our Moon's Gravitational Bumps Solved?
Richard A. Kerr
<jats:p>A group of researchers reported how over millions of years, the moon's subtle adjustment to an impact might eventually create a high spot in the moon's bumpy gravitational field.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 138-139
More Support for an Ocean in Enceladus
Richard A. Kerr
<jats:p>Researchers argued that the latest Cassini observations make sense if liquid water is escaping from a deep ocean through cracks in Enceladus's outer ice shell.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 139-139
Snapshots From the Meeting
Richard A. Kerr
<jats:p>The Curiosity rover has come across hints of chemical reactions on Mars that could have produced the organic "building blocks of life," but without any life. And big impacts on the moon and Mars have blasted off bits of rock that have been picked up on Earth, so could it be possible that a researcher has found a meteorite from Mercury?</jats:p>
Palabras clave: Multidisciplinary.
Pp. 139-139
Drawbacks to Natural Gas
Sara Souther
Palabras clave: Multidisciplinary.
Pp. 141-141
Biosecurity's Weakest Link
Philip E. Hulme
Palabras clave: Multidisciplinary.
Pp. 141-142
China's Nuclear Power Goals Surge Ahead
X. Jin Yang; Donghui Zhang; Mi Xu; Jinying Li
Palabras clave: Multidisciplinary.
Pp. 142-142
Corrections and Clarifications
Palabras clave: Multidisciplinary.
Pp. 142-143
Comment on “Apatite 4 He/ 3 He and (U-Th)/He Evidence for an Ancient Grand Canyonâ€
Ivo Lucchitta
<jats:p>Flowers and Farley (Reports, 21 December 2012, p. 1616; published online 29 November 2012) use thermochronometry to propose that the western paleo–Grand Canyon was nearly as deep 70 million years ago (Ma) as today. However, lithologies, facies relations, geomorphology, and paleotopography of Miocene interior-basin deposits near the mouth of the Grand Canyon show that no paleocanyon existed in that area during filling of the basin, ~17 to ~5 Ma.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 143-143
Response to Comments on “Apatite 4 He/ 3 He and (U-Th)/He Evidence for an Ancient Grand Canyonâ€
R. M. Flowers; K. A. Farley
<jats:p>We reiterate that geological observations do not require Grand Canyon carving coeval with Colorado River integration. (U-Th)/He data from the western canyon, totaling 29 reproducible analyses from six samples and two labs, compellingly support an ancient canyon. Three dispersed analyses from one anomalous sample do not refute this conclusion, nor do the claimed shortcomings of our modeling have validity.</jats:p>
Palabras clave: Multidisciplinary.
Pp. 143-143