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Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE)
- A. McEwen, E. Eliason, C. Weitz
- Geology
- 1 May 2007
[1] The HiRISE camera features a 0.5 m diameter primary mirror, 12 m effective focal length, and a focal plane system that can acquire images containing up to 28 Gb (gigabits) of data in as little as…
On the nucleus structure and activity of comet 67P/Churyumov-Gerasimenko
- H. Sierks, C. Barbieri, M. Pätzold
- Physics, GeologyScience
- 23 January 2015
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.
Dust measurements in the coma of comet 67P/Churyumov-Gerasimenko inbound to the Sun
- A. Rotundi, H. Sierks, J. Zarnecki
- Physics, GeologyScience
- 23 January 2015
The largest orbiting clumps are meter-sized, confirming the dust/gas ratio of 3 inferred at perihelion from models of dust comae and trails.
Rain, winds and haze during the Huygens probe's descent to Titan's surface
- M. Tomasko, B. Archinal, R. West
- Physics, GeologyNature
- 8 December 2005
Spectra and high-resolution images obtained by the Huygens Probe Descent Imager/Spectral Radiometer instrument in Titan's atmosphere reveal the traces of once flowing liquid, and like Earth, the brighter highland regions show complex systems draining into flat, dark lowlands.
Observations of Comet 19P/Borrelly by the Miniature Integrated Camera and Spectrometer Aboard Deep Space 1
- L. Soderblom, T. Becker, R. Yelle
- Physics, GeologyScience
- 4 April 2002
The nucleus of the Jupiter-family comet 19P/Borrelly was closely observed by the Miniature Integrated Camera and Spectrometer aboard the Deep Space 1 spacecraft on 22 September 2001, and Borrelly's coma exhibits two types of dust features: fans and highly collimated jets.
Seasonal Flows on Warm Martian Slopes
Recurring slope lineae (RSL) are narrow, relatively dark markings on steep slopes; repeat images from the Mars Reconnaissance Orbiter High Resolution Imaging Science Experiment show them to appear and incrementally grow during warm seasons and fade in cold seasons.
Recurring slope lineae in equatorial regions of Mars
The presence of liquid water is a requirement of habitability on a planet. Possible indicators of liquid surface water on Mars include intermittent flow-like features observed on sloping terrains.…
The global shape, density and rotation of Comet 67P/Churyumov-Gerasimenko from preperihelion Rosetta/OSIRIS observations
- L. Jorda, R. Gaskell, K. Wenzel
- Physics, Geology
- 1 October 2016
Observations of periglacial landforms in Utopia Planitia with the High Resolution Imaging Science Experiment (HiRISE)
[1] The region of western Utopia Planitia (80–105°E, 40–55°N) displays several types of landforms similar to Earth periglacial features, including scallop-shaped depressions and networks of polygonal…
Distribution of Mid-Latitude Ground Ice on Mars from New Impact Craters
Observations of ground ice exposed by recent impact craters probe the composition of the upper layers of the surface of Mars, and derive ice-table depths that are consistent with models using higher long-term average atmospheric water vapor content than present values.
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