Lindley Johnson Head Shot

Lindley Johnson

Planetary Defense Officer, NASA

Lindley Johnson is NASA's first-ever Planetary Defense Officer. He previously held the title of Near Earth Object Programs Executive in the Planetary Sciences Division. Lindley was also formerly the Program Executive at NASA Headquarters for the EPOXI mission.

Latest Planetary Radio Appearances

It’s Asteroid Week with NASA’s Planetary Defense Officer

The dinosaurs regret their lack of a space program. 200 million years later, humans are gearing up to defend themselves from a species-ending rock.

Planetary Radio Live: Near Earth Objects—The Killer Asteroid Threat

Leaders of the quest to find, understand and protect ourselves from the asteroids and comets called Near Earth Objects gathered with host Mat Kaplan for a live conversation about this existential threat from space.

NASA’s New Planetary Defense Office

Lindley Johnson has just been named NASA's first Planetary Defense Officer. He's joined on this week's PlanRad by astronomer Kelly Fast, the new manager of the Near Earth Object Observation Program.