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Spitzer Spectral Observations of the Deep Impact Ejecta
Spitzer Space Telescope imaging spectrometer observations of comet 9P/Tempel 1 during the Deep Impact encounter returned detailed, highly structured, 5- to 35-micrometer spectra of the ejecta, and the atomic abundance of the observed material is consistent with solar and C1 chondritic abundances.
Temporal and Spatial Variability of Lunar Hydration As Observed by the Deep Impact Spacecraft
Analysis of recent infrared mapping by Chandrayaan-1 and Deep Impact and reexamining Cassini data obtained during its early flyby of the Moon reveals a noticeable absorption signal for H2O and OH across much of the surface, suggesting solar wind is depositing and/or somehow forming water and OH in minerals near the lunar surface, and that this trapped water is dynamic.
On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko
Images from the OSIRIS scientific imaging system onboard Rosetta show that the nucleus of 67P/Churyumov-Gerasimenko consists of two lobes connected by a short neck, which raises the question of whether the two Lobes represent a contact binary formed 4.5 billion years ago, or a single body where a gap has evolved via mass loss.
Report of the IAU/IAG Working Group on cartographic coordinates and rotational elements: 2006
Every three years the IAU/IAG Working Group on Cartographic Coordinates and Rotational Elements revises tables giving the directions of the poles of rotation and the prime meridians of the planets,…
Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun
The largest orbiting clumps are meter-sized, confirming the dust/gas ratio of 3 inferred at perihelion from models of dust comae and trails.
The ensemble properties of comets: Results from narrowband photometry of 85 comets
A process for producing novel air-stable coated particles of a magnetic transition metal-rare earth alloy. An organometallic compound which decomposes at a temperature below 500 DEG C is heated to…
The global shape, density and rotation of Comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations
Report of the IAU Working Group on Cartographic Coordinates and Rotational Elements: 2009
Every three years the IAU Working Group on Cartographic Coordinates and Rotational Elements revises tables giving the directions of the poles of rotation and the prime meridians of the planets,…
Physical Properties of the Nucleus of Comet 2P/Encke
Abstract We report a new study of the nucleus of Comet 2P/Encke, which the CONTOUR spacecraft is scheduled to encounter in November 2003. During the comet's close approach to Earth in July 1997, we…