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Mars Orbiter Laser Altimeter: Experiment summary after the first year of global mapping of Mars
The Mars Orbiter Laser Altimeter (MOLA), an instrument on the Mars Global Surveyor spacecraft, has measured the topography, surface roughness, and 1.064-μm reflectivity of Mars and the heights of… Expand
Ancient Geodynamics and Global-Scale Hydrology on Mars
Loading of the lithosphere of Mars by the Tharsis rise explains much of the global shape and long-wavelength gravity field of the planet, including a ring of negative gravity anomalies and a… Expand
Internal structure and early thermal evolution of Mars from Mars Global Surveyor topography and gravity.
Topography and gravity measured by the Mars Global Surveyor have enabled determination of the global crust and upper mantle structure of Mars. The planet displays two distinct crustal zones that do… Expand
The global topography of Mars and implications for surface evolution.
Elevations measured by the Mars Orbiter Laser Altimeter have yielded a high-accuracy global map of the topography of Mars. Dominant features include the low northern hemisphere, the Tharsis province,… Expand
The Crust of the Moon as Seen by GRAIL
The Holy GRAIL? The gravity field of a planet provides a view of its interior and thermal history by revealing areas of different density. GRAIL, a pair of satellites that act as a highly sensitive… Expand
The Mars Observer laser altimeter investigation
The primary objective of the Mars Observer laser altimeter (MOLA) investigation is to determine globally the topography of Mars at a level suitable for addressing problems in geology and geophysics.… Expand
Microearthquake Characteristics of a Mid‐Ocean Ridge along‐axis high
We report results from a 3-week microearthquake survey of the segment of the Mid-Atlantic Ridge axis near 26°N. The segment is centered on an along-axis median valley bathymetric high that includes… Expand
The Major-Element Composition of Mercury’s Surface from MESSENGER X-ray Spectrometry
Geochemical data show that the major rock-forming components of Mercury are characterized by high sulfur content. X-ray fluorescence spectra obtained by the MESSENGER spacecraft orbiting Mercury… Expand
Gravity Field and Internal Structure of Mercury from MESSENGER
Mercury Inside and Out The MESSENGER spacecraft orbiting Mercury has been in a ∼12-hour eccentric, near-polar orbit since 18 March 2011 (see the Perspective by McKinnon). Smith et al. (p. 214,… Expand
The Global Magnetic Field of Mercury from MESSENGER Orbital Observations
Displacement of Mercury's magnetic dipole implies that the surface field has a north-south asymmetry. Magnetometer data acquired by the MESSENGER spacecraft in orbit about Mercury permit the… Expand