Lindley Johnson, NASA’s Planetary Defense Officer and Program Executive of the Planetary Defense Coordination Office (PDCO), is seen in the audience at the sixth International Academy of Astronautics Planetary Defense Conference, Monday, April 29, 2019 at The Hotel at the University of Maryland in College Park Maryland. The conference brings together experts from around the world to present the latest research on Near-Earth Objects and will highlight the development of the first-ever mission to demonstrate an asteroid defection technique for planetary defense, NASA’s Double Asteroid Redirection Test (DART). Photo Credit: (NASA/Joel Kowsky)

Lindley Johnson, planetary defense officer for NASA’s Planetary Defense Coordination Office, participates in a prelaunch news conference for the agency’s Double Asteroid Redirection Test (DART) mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

From left, Dr Thomas Zurbuchen, Lindley Johnson, Ed Reynolds, Omar Baez, Julianna Scheiman, and Capt. Maximillian Rush participate in a prelaunch news conference on Nov. 22, 2021, at Vandenberg Space Force Base in California in preparation for the agency’s Double Asteroid Redirection Test (DART) launch. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

In a panel discussion in the Kennedy Space Center’s Operations Support Building II, social media followers were briefed by NASA scientists on asteroids, how they relate to the origins of our solar system and the search for life beyond Earth. The discussion took place before launch of the agency’s Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer, or OSIRIS-REx spacecraft. Panelists for this conversation are, from the left, Ellen Stofan, NASA chief scientist; Michelle Thaller, deputy director of science communications for NASA’s Science Mission Directorate; Felicia Chou, NASA Communications; Alex Young, associate director for science in the Heliophysics Science Division at NASA’s Goddard Space Flight Center in Greenbelt, Maryland; and Lindley Johnson, director of the Planetary Defense Coordination Office in NASA’s Science Mission Directorate.

In a panel discussion in the Kennedy Space Center’s Operations Support Building II, social media followers were briefed by NASA scientists on asteroids, how they relate to the origins of our solar system and the search for life beyond Earth. The discussion took place before launch of the agency’s Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer, or OSIRIS-REx spacecraft. Panelists in view are, from the left, Felicia Chou, NASA Communications; Alex Young, associate director for science in the Heliophysics Science Division at NASA’s Goddard Space Flight Center in Greenbelt, Maryland; and Lindley Johnson, director of the Planetary Defense Coordination Office in NASA’s Science Mission Directorate. Also participating in the panel discussion are Ellen Stofan, NASA chief scientist and Michelle Thaller, deputy director of science communications for NASA’s Science Mission Directorate.

In a panel discussion in the Kennedy Space Center’s Operations Support Building II, social media followers were briefed by NASA scientists on asteroids, how they relate to the origins of our solar system and the search for life beyond Earth. The discussion took place before launch of the agency’s Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer, or OSIRIS-REx spacecraft. Panelists for this conversation are, from the left, Ellen Stofan, NASA chief scientist; Michelle Thaller, deputy director of science communications for NASA’s Science Mission Directorate; Felicia Chou, NASA Communications; Alex Young, associate director for science in the Heliophysics Science Division at NASA’s Goddard Space Flight Center in Greenbelt, Maryland; and Lindley Johnson, director of the Planetary Defense Coordination Office in NASA’s Science Mission Directorate.

Derrol Nail, NASA Communications, moderates a prelaunch news conference for the agency’s Double Asteroid Redirection Test (DART) mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

Ed Reynolds, Double Asteroid Redirection Test (DART) project manager for Johns Hopkins Applied Physics Laboratory, participates in a prelaunch news conference for NASA’s DART mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

Julianna Scheiman, director for civil satellite missions for SpaceX, participates in a prelaunch news conference for NASA’s Double Asteroid Redirection Test (DART) mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

Omar Baez, senior launch director for NASA’s Launch Services Program, participates in a prelaunch news conference for the agency’s Double Asteroid Redirection Test (DART) mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

Capt. Maximillian Rush, weather officer for Space Launch Delta 30, participates in a prelaunch news conference for NASA’s Double Asteroid Redirection Test (DART) mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.

Thomas Zurbuchen, associate administrator for NASA’s Science Mission Directorate, participates in a prelaunch news conference for the agency’s Double Asteroid Redirection Test (DART) mission at Vandenberg Space Force Base in California on Nov. 22, 2021. DART is the first mission to test technologies for preventing an impact of Earth by a hazardous asteroid. The mission is scheduled to launch no earlier than 1:21 a.m. EST Wednesday, Nov. 24 (10:21 p.m. PST Tuesday, Nov. 23), aboard a SpaceX Falcon 9 rocket from Vandenberg. NASA's Launch Services Program based at Kennedy Space Center in Florida, America's multi-user spaceport, is managing the launch.