NASA selects neutron and gamma-ray spectrograph for Japan aerospace mission to Martian moons

WASHINGTON. NASA engineers in Washington selected a sophisticated neutron and gamma-ray spectrograph for an upcoming Japan-led sample return mission to the moons of Mars planned for launch in 2024. The Mars Moons eXploration (MMX) mission, in development by the Japan Aerospace Exploration Agency (JAXA), will visit the two Martian moons, Phobos and Deimos, land on the surface of Phobos, and collect a surface sample. NASA is supporting the development of one of the spacecraft's suite of seven science instruments.

NASA selects neutron and gamma-ray spectrograph for Japan aerospace mission to Martian moons v
NASA selects neutron and gamma-ray spectrograph for Japan aerospace mission to Martian moons v

WASHINGTON. NASA engineers in Washington selected a sophisticated neutron and gamma-ray spectrograph for an upcoming Japan-led sample return mission to the moons of Mars planned for launch in 2024. The Mars Moons eXploration (MMX) mission, in development by the Japan Aerospace Exploration Agency (JAXA), will visit the two Martian moons, Phobos and Deimos, land on the surface of Phobos, and collect a surface sample. NASA is supporting the development of one of the spacecraft's suite of seven science instruments.

Plans are for the sample to be returned to Earth in 2029. The instrument will help scientists resolve one of the most enduring mysteries of the Red Planet -- when and how the small moons formed.

NASA selects neutron and gamma-ray spectrograph for Japan aerospace mission to Martian moons vNASA selects neutron and gamma-ray spectrograph for Japan aerospace mission to Martian moons v

"Solving the riddle of how Mars' moons came to be will help us better understand how planets formed around our Sun and, in turn, around other stars," says Thomas Zurbuchen, associate administrator for NASA's Science Mission Directorate (SMD). "International partnerships like this provide high-quality science with high-impact return."

The selected instrument, named MEGANE (meaning "eyeglasses" in Japanese), will be developed by a team led by David Lawrence of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland. MEGANE will give MMX the ability to "see" the elemental composition of Phobos, by measuring the energies of neutrons and gamma-rays emitted from the small moon. The elementary particles are emitted naturally as a result of the high-energy cosmic rays and solar energetic particles that continually strike and penetrate the surface of Phobos.

Mmx Japan

"With MMX, we hope to understand the origin of the moons of Mars," says Masaki Fujimoto, director of the department of solar system science in JAXA's Institute of Space and Aeronautical Sciences. "They may have formed as the result of a large impact on Mars, or they may be captured asteroids of a sort that may have brought a great deal of water to both Mars and Earth."

MEGANE will be developed under NASA's Discovery Program, which provides frequent, low-cost access to space using principal investigator-led space science investigations relevant to SMD's planetary science program.

"We'll see the composition of the region from which MMX collects its sample," adds Thomas Statler, program scientist for MMX at NASA Headquarters in Washington. "This will help us better understand what we discover in the laboratory when the mission returns the sample to Earth for analysis."

The Discovery Program is managed by NASA's Marshall Space Flight Center in Huntsville, Alabama for SMD, which conducts a wide variety of research and scientific exploration programs for Earth studies, space weather, the solar system and universe.

Mmx Nasa

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