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Tanaka Lab
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A lab that develops exploration instruments to uncover the internal structure of the Moon and planets.

AboutAbout the lab
Revealing the Solar System through exploration
The Tanaka Lab studies the internal structure of the Moon and planets through exploration.
The lab develops penetrators, observation instruments equipped with seismometers and other sensors that pierce into the ground, and analyzes observation data obtained during the Apollo program.
The lab is run by a lab at the JAXA Institute of Space and Astronautical Science as a collaborative chair of the Department of Complexity Science and Engineering, and students conduct their research at the institute.
Students choose their research topics according to their own interests, and the lab studies not only the Moon but also other bodies such as asteroids.
Key terms
- Penetrator
- A spear-shaped device that strikes the ground at high speed and penetrates it, making observations with onboard instruments such as seismometers
- Heat flow
- The amount of heat from a planet's interior that escapes from its surface into space. It offers clues to how much the planet has cooled
- Apollo program
- A U.S. program in the 1960s and 70s to send humans to the Moon. Observation instruments such as seismometers were placed on the lunar surface
ResearchResearch themes
To reveal the internal structure of the Moon and planets, the lab develops instruments for exploration and analyzes observation data. Its research combines three approaches: numerical experiments (simulations), experiments, and data analysis.
*Illustrative imageAnalysis of Apollo Program Observation Data
Among the data from the instruments placed on the lunar surface during the Apollo program, the lab is reviving heat flow data that had hardly ever been analyzed, and is advancing their analysis.
*Illustrative imageInternal Structure of the Moon, Earth, and Other Bodies
The lab aims to investigate the interiors of the Moon and other solid planets using two methods: seismic exploration, which probes the interior with seismic waves, and measurement of surface heat flow.
*Illustrative imageDevelopment of Penetrators
The lab has long been involved in developing penetrators, high-speed penetrating observation instruments that can carry seismometers and heat flow probes. The aim is to send them to the Moon and planets to obtain data on their internal structure.
MembersFaculty
The members of the Tanaka Lab are faculty members, graduate students, and secretaries.As of 2023
- Visiting Associate ProfessorSatoshi Tanaka
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images.
- Top image: “Full moon partially obscured by atmosphere” NASA / Public domain (cropped)
- Analysis of Apollo Program Observation Data: “AS ) (cropped)” Project Apollo Archive(NASA) / Public domain (cropped)
- Internal Structure of the Moon, Earth, and Other Bodies: “Terrestrial Planet Interiors (Earth, Mars and Moon) - Artist's Concept” NASA/JPL-Caltech / Public domain (cropped)
- Development of Penetrators: “Flight 1 probe of Deep Space 2 in Pre-Impact Configuration Microprobe-5” NASA / Public domain (cropped)
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