The X-Ray Spectrometer on the MESSENGER Spacecraft

@article{Schlemm2007TheXS,
  title={The X-Ray Spectrometer on the MESSENGER Spacecraft},
  author={Charles E. Schlemm and Richard D. Starr and George C. Ho and Kathryn E. Bechtold and S. A. Hamilton and John D. Boldt and William V. Boynton and Walter Bradley and Martin E. Fraeman and Robert E. Gold and John O. Goldsten and John R. Hayes and Stephen E. Jaskulek and E. Rossano and Robert A. Rumpf and Edward D. Schaefer and Kim Strohbehn and R. G. Shelton and Raymond E. Thompson and Jacob I. Trombka and Bruce D. Williams},
  journal={Space Science Reviews},
  year={2007},
  volume={131},
  pages={393-415}
}
Abstract NASA’s MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) mission will further the understanding of the formation of the planets by examining the least studied of the terrestrial planets, Mercury. During the one-year orbital phase (beginning in 2011) and three earlier flybys (2008 and 2009), the X-Ray Spectrometer (XRS) onboard the MESSENGER spacecraft will measure the surface elemental composition. XRS will measure the characteristic X-ray emissions induced on… 
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Energetic electron detection in Mercury's magnetosphere with the MESSENGER Gamma-Ray Spectrometer
The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft entered a ~12-hr orbit around Mercury on 18 March 2011. Following instrument turn-on, several instruments in
The BepiColombo Mercury Imaging X-Ray Spectrometer: Science Goals, Instrument Performance and Operations
The Mercury Imaging X-ray Spectrometer is a highly novel instrument that is designed to map Mercury’s elemental composition from orbit at two angular resolutions. By observing the fluorescence X-rays
MESSENGER observations of suprathermal electrons in Mercury's magnetosphere
The X‐Ray Spectrometer (XRS) on the MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft regularly detected fluorescent X‐rays near Mercury induced by low‐energy (1–10 keV) or
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Abstract A Gamma-Ray and Neutron Spectrometer (GRNS) instrument has been developed as part of the science payload for NASA’s Discovery Program mission to the planet Mercury. Mercury Surface, Space
Instrument Calibrations and Data Analysis Procedures for the NEAR X-Ray Spectrometer
Abstract The X-Ray spectrometer onboard the Near Earth Asteroid Rendezvous spacecraft will measure X-rays from the surface of 433 Eros in the energy region 0.7–10 keV. Detection of characteristic Kα
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MESSENGER Mission Design and Navigation
Abstract Nearly three decades after the Mariner 10 spacecraft’s third and final targeted Mercury flyby, the 3 August 2004 launch of the MESSENGER (MErcury Surface, Space ENvironment, GEochemistry,
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TLDR
The MESSENGER spacecraft was designed and constructed to withstand the harsh environments associated with achieving and operating in Mercury orbit and went through an extensive development and testing effort that provided the team with confidence that all mission goals will be achieved.
The Mercury Dual Imaging System on the MESSENGER Spacecraft
TLDR
MDIS will acquire four main data sets at Mercury during three flybys and the two-Mercury-solar-day nominal mission: a monochrome global image mosaic at near-zero emission angles and moderate incidence angles, a stereo-complement map at off-nadir geometry and near-identical lighting, multicolor images at low incidence angles and targeted high-resolution images of key surface features.
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ONE feature of Prof. H. C. Urey's new theory1 of the development of the planets is that it leads him to conclude on several grounds that the earth's central core has an iron composition. This
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