Lindley Johnson

Lindley Johnson is the head of NASA's planetary defense program. She has a background in planetary science and has worked on various asteroid and comet missions. Johnson is a leading expert in planetary defense and has been involved in the development of NASA's asteroid deflection strategies. She has also worked on the agency's planetary defense budget and has been a key figure in the development of NASA's planetary defense policy. Johnson has a Ph.D. in planetary science from the University of Arizona and has published numerous papers on asteroid and comet science. She is a fellow of the American Association for the Advancement of Science and has received several awards for her work in planetary defense. Johnson is also a professor at the University of Arizona and has taught courses on planetary science and asteroid science. She is a popular speaker at conferences and has given talks on planetary defense and asteroid science at various events. Johnson is also active on social media and has a strong following on Twitter and Instagram.