A NASA Discovery mission to conduct the first orbital study
of the innermost planet
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MESSENGER Telecon Panel Biographies

Marilyn M. Lindstrom, MESSENGER Program Scientist
NASA Headquarters, Washington

Marylin MESSENGER's Program Scientist at NASA Headquarters is Dr. Marilyn Lindstrom. She is the liaison between the MESSENGER principal investigator and the science team and NASA program management on science matters. She is responsible for overseeing science planning, implementation, analysis, and data archiving, but also for facilitating MESSENGER science. Dr. Lindstrom is also program scientist for the Mars Fundamental Research program, Astromaterials Curation, and Planetary EPO. She previously managed the Planetary Instrument Definition and Development and Mars Data Analysis Programs. Prior to coming to Headquarters she was curator of Antarctic meteorites at NASA Johnson Space Center in Houston, and a research scientist studying rocks from the Earth, Moon, and Mars. She is particularly interested in comparative planetology of the terrestrial planets and is delighted to have a role in studying Mercury, the least known of these bodies.

Contact Information: 202.358.1254
e-mail: marilyn.lindstrom-1@nasa.gov


Daniel J. O'Shaughnessy
The Johns Hopkins University Applied Physics Laboratory

Daniel O'Shaughnessy Dan O’Shaughnessy is the current lead for MESSENGER’s Guidance and Control subsystem. Along with monitoring the spacecraft’s telemetry and attitude, he ensures the accuracy of deep-space maneuvers and trajectory-correction maneuvers. By continually updating models of the spacecraft dynamics and working to solve “in-flight” problems, the GNC team makes certain that MESSENGER is always pointing in the right direction in order to perform its mission successfully.

Contact Information: 240.228.3807
e-mail: Daniel.OShaughnessy@jhuapl.edu

Scott L. Murchie
The Johns Hopkins University Applied Physics Laboratory

Scott L. Murchie Scott Murchie studies the surface composition of Mars, asteroids, and the Moon using imaging and spectroscopy. He participated in development and testing of the Mercury Dual Imaging System (MDIS), is part of the team that processes the MDIS images for archival and delivery to the community, and contributes to the mission imaging strategy. His primary science focus on MESSENGER is compositional layering of Mercury's crust. He is member of the Geochemistry Group and deputy chair of the Geology Group. Murchie has also been a team member on a variety of other flight projects. He was a Particiapting Scientist on Mars Pathfinder and a Science Team member on the Near Earth Asteroid Rendezvous (NEAR) and Comet Nucleus Tour (CONTOUR) missions. Currently he is Principal Investigator for the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on the Mars Reconnaissance Orbiter (MRO). CRISM’s primary mission is to search for signs that liquid water once existed on Mars by identifying minerals that form only in the presence of water.

Contact Information: 240.228.6235
e-mail: Scott.Murchie@jhuapl.edu


Sean C. Solomon, MESSENGER Principal Investigator
Carnegie Institution of Washington, Washington

Sean Solomon As Principal Investigator for the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission, Sean Solomon heads a multi-institutional consortium of scientists and engineers who operate the small, efficient spacecraft, which launched in 2004 and will reach its target orbit in 2011.
Prior to this January, the only craft sent to Mercury was Mariner 10 in the 1970s, and it imaged less than half of the planet. With a suite of seven miniaturized instruments, MESSENGER will address questions that are key to understanding terrestrial planet evolution. Solomon's particular interests are to learn more about Mercury's bulk composition and what that tells us about planet formation in general; to investigate Mercury's volcanic, tectonic, and internal evolution; and to understand how the planet's magnetic field originated and determine the characteristics of Mercury's liquid outer core. Mariner 10 discovered that Mercury has a weak magnetic field, which may arise from an Earth-like electromagnetic dynamo in the planet's outer core. MESSENGER will investigate this question as well as the nature of the planet's thin atmosphere and the composition of the permanently shadowed polar deposits.
Solomon has also been a team member on a variety of other projects, including the Magellan mission to Venus, the Mars Orbiter Laser Altimeter (MOLA) investigation on the Mars Global Surveyor spacecraft, and the Plume-Lithosphere Undersea Mantle Experiment (PLUME) on Earth. The Magellan mission produced global radar image and altimetric maps of the surface of Venus. Data from MOLA have been used to construct precise topographical maps to understand Martian geology, geophysics, and atmospheric circulation. PLUME is a combined land and ocean-bottom seismic experiment to image the mantle beneath the Hawaiian hotspot. Solomon is leading the land section of this project.
Solomon balances his position as director of the Carnegie Institution of Washington's Department of Terrestrial Magnetism with research in planetary geology and geophysics, seismology, marine geophysics, and geodynamics. Prior to accepting his current position, he was a professor of geophysics at the Massachusetts Institute of Technology for more than 20 years. He is a member of the National Academy of Sciences, a fellow of the American Academy of Arts and Sciences, and a former president of the American Geophysical Union.

Contact Information: 202.478.8850
e-mail: scs@dtm.ciw.edu



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