NASA will host a virtual media briefing at 3:30 p.m. EDT, Thursday, June 20, to discuss a new summary of a recent tabletop exercise to simulate national and international responses to a hypothetical asteroid impact threat.

The fifth biennial Planetary Defense Interagency Tabletop Exercise was held April 2 and 3, 2024, at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland.

NASA’s Planetary Defense Coordination Office, in partnership with FEMA (Federal Emergency Management Agency) and with the assistance of the U.S. Department of State Office of Space Affairs, convened the tabletop exercise to inform and assess our ability as a nation to respond effectively to the threat of a potentially hazardous asteroid or comet. This exercise supports NASA’s planetary defense strategy to protect our planet and continues the agency’s mission to innovate for the benefit of humanity.

Video of the briefing will stream live on NASA TV and NASA’s YouTube channel.

The following participants will review the history and purpose of the exercise, the scenario encountered during this year’s simulation, and its findings and recommendations:

• Lindley Johnson, NASA’s Planetary Defense Officer Emeritus, NASA Headquarters, Washington
• Leviticus “L.A.” Lewis, FEMA detailee to NASA’s Planetary Defense Coordination Office, NASA Headquarters
• Terik Daly, planetary defense section supervisor, Johns Hopkins Applied Physics Laboratory, Laurel, Maryland

To register for the briefing, media must RSVP no later than two hours before the event to Alise Fisher at alise.m.fisher@nasa.gov. NASA’s media accreditation policy is available online.

While there are no known significant asteroid impact threats for the foreseeable future, hypothetical exercises like this one, which are conducted about every two years, provide valuable insights on how the United States could respond effectively if a potential asteroid impact threat is identified.

This year’s exercise was the first to include participation by NASA’s international collaborators in planetary defense and the first to have the benefit of actual data from NASA’s successful DART (Double Asteroid Redirection Test) mission, the world’s first in-space technology demonstration for defending Earth against potential asteroid impacts.

NASA established the Planetary Defense Coordination Office in 2016 to manage the agency’s ongoing efforts in planetary defense.

To learn more about planetary defense at NASA, visit: 

https://science.nasa.gov/planetary-defense/

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Charles Blue / Karen Fox
Headquarters, Washington 
202-802-5345 / 202-358-1600
charles.e.blue@nasa.gov / karen.fox@nasa.gov

https://www.nasa.gov/news-release/nasa-to-discuss-outcome-of-5th-biennial-asteroid-threat-exercise/