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JAXA Planetary Defense Team: The Latest on Planetary Defense

An accessible overview of the latest developments in planetary defense, with a focus on JAXA’s efforts to address the potential risks posed by near-Earth objects. This lecture was streamed on October 12, 2025, as part of the JAXA Sagamihara Campus Special Open Day.

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The Front Line of Planetary Defense! [JAXA Sagamihara Campus Special Open Day 2024]

Using asteroid Apophis as an example, this lecture provides an accessible introduction to current planetary defense research and preparedness efforts. It was streamed on November 3, 2024, as part of the JAXA Sagamihara Campus Special Open Day.

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ISAS Talk Event: An Introduction to Planetary Defense

This live talk on planetary defense was held at the Space Science and Exploration Exchange Building on the JAXA Sagamihara Campus.

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How to Prevent an Asteroid Impact: Planetary Defense

Planetary defense encompasses efforts to detect, assess, and mitigate potential impact threats from asteroids and meteoroids. This video clearly explains the fundamentals, from impact prediction to asteroid-deflection methods such as kinetic impactors and gravity tractors.

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Taking on the Challenge of Planetary Defense: The Hera Binary Asteroid Mission

Hera is the first mission to investigate the outcome of an asteroid-deflection test. The video introduces JAXA’s Thermal Infrared Imager (TIRI), other mission technologies, and Hera’s observation strategy, explaining how the mission contributes to planetary defense research.