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Apollo Grover Historical Photo: A4 thumbnail

Apollo Grover Historical Photo: A4

image/jpeg 3 MB

William Tinnin (left) and William Wiser weld Grover wheel mount components.

Apollo Grover Historical Photo: A5 thumbnail

Apollo Grover Historical Photo: A5

image/jpeg 3 MB

William Tinnin (left), William Wiser (center), and Putty Mills attach electric motor to Grover wheel; electric motor is from B-26 landing gear and wheel is from Oldmobile Tornado.

Apollo Grover Historical Photo: A6 thumbnail

Apollo Grover Historical Photo: A6

image/jpeg 3 MB

Grover with wheels, electric motors, wheel mount/steering components, and Delco batteries attached to frame.

Apollo Grover Historical Photo: A7 thumbnail

Apollo Grover Historical Photo: A7

image/jpeg 2 MB

Putty Mills uses grinding tool to shape Grover wheel mount/steering component.

Apollo Grover Historical Photo: A8 thumbnail

Apollo Grover Historical Photo: A8

image/jpeg 2 MB

William Wiser (left) and Putty Mills adjust Grover steering mechanism.

Apollo Grover Historical Photo: A9 thumbnail

Apollo Grover Historical Photo: A9

image/jpeg 2 MB

William Tinnin used socket wrench to loosen Grover rear wheel nut; note control console structure (left).

Apollo Grover Historical Photo: A10 thumbnail

Apollo Grover Historical Photo: A10

image/jpeg 2 MB

Closeup of Grover steering and wheel motor mechanism with wheel removed.

Apollo Grover Historical Photo: A11 thumbnail

Apollo Grover Historical Photo: A11

image/jpeg 3 MB

William Wiser adjusts Grover steering mechanism.

Apollo Grover Historical Photo: A12 thumbnail

Apollo Grover Historical Photo: A12

image/jpeg 2 MB

Grover frame with wheels and control console structure.

Apollo Grover Historical Photo: A13 thumbnail

Apollo Grover Historical Photo: A13

image/jpeg 2 MB

Grover frame with wheels, control console structure, seat frames, and battery boxes.

Project Pages

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IAU - WGCCRE thumbnail

IAU - WGCCRE

http://astrogeology.usgs.gov/groups/iau-wgccre

History: The IAU Working Group on Cartographic Coordinates and Rotational Elements of the Planets and Satellites was established as a consequence of a resolution adopted by Commissions 4 and 16 at…

Revisiting Lava Flow Simple Models thumbnail

Revisiting Lava Flow Simple Models

http://astrogeology.usgs.gov/geology/revisiting-lava-flow-simple-models

Simple models relating the final dimensions of a lava flow to eruption parameters an lava rheology were used extensively in the 1980's but have fallen out of use in the terrestrial vocanology…

Moon Pyroclastic Volcanism Project thumbnail

Moon Pyroclastic Volcanism Project

http://astrogeology.usgs.gov/geology/moon-pyroclastic-volcanism-project

Project Overview The goal of this research project is to advance our understanding of pyroclastic volcanism on the Moon using remote sensing data, primarily the high-spatial-resolution (~100 m/pixel)…

Sub-ice Volcanism on Earth and Mars thumbnail

Sub-ice Volcanism on Earth and Mars

http://astrogeology.usgs.gov/geology/mars-volcano-ice-interactions

Sub-glacially erupted volcanoes form free-standing flat-topped mesas, known as tuyas. Although there are some silicic edifices (e.g. Tuffen et al., 2002), most terrestrial sub-ice volcanoes are mafic…

Valles Marineris - The Grand Canyon of Mars thumbnail

Valles Marineris - The Grand Canyon of Mars

http://astrogeology.usgs.gov/geology/mars-valles-marineris

The Valles Marineris is a system of canyons located just south of the Martian equator. The system is about 4000 km long, and, if on earth, would extend all the way across the United States. The…

Mars Ice

http://astrogeology.usgs.gov/geology/mars-ice

North Pole Consortium Meetings Instruments and Data Tharsis Region South Pole South Pole Cryptic Region South Pole Recession

Laboratory Infrared Spectroscopy of Mars Analog Materials thumbnail

Laboratory Infrared Spectroscopy of Mars Analog Materials

http://astrogeology.usgs.gov/geology/mars-pathfinder-infrared-spectroscopy

Former USGS scientist, Jeff Johnson, performed key research on the detection of dust on the Martian surface. This work explored the laboratory thermal infrared and visible/near-infrared spectroscopy…

Evidence of Cryovolcanism on Titan thumbnail

Evidence of Cryovolcanism on Titan

http://astrogeology.usgs.gov/geology/titan-cryovolcanism

From NASA Press Release…New data from NASA's Cassini spacecraft reveal topography on Saturn's moon Titan that makes the best case yet for an ice volcano on Titan and reveals the most…

Moon LRO DTM's and Mosaics thumbnail

Moon LRO DTM's and Mosaics

http://astrogeology.usgs.gov/maps/moon-lro-dtms-and-mosaics

USGS LMMP products will soon be available at the LMMP Portal. These include very large high resolution DTMs and orthomosaics of close to 50 key sites on the lunar surface, and high resolution…

Control Networks thumbnail

Control Networks

http://astrogeology.usgs.gov/maps/control-networks

Table of Contents Mercury R O Venus R Moon1 R Mars R G Phobos O Deimos O Asteroids   243 Ida R 433 Eros O 951 Gaspra R Jupiter   Io R G O Europa R G Ganymede R…

Documents

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