Space.com talked with Johnson, the space agency's Planetary Defense Officer Emeritus, now in phased retirement mode, about his decades of work in shaping a global response and reaction to a rocky ...

In December, astronomers identified that the asteroid YR4 had a small but not insignificant chance of striking Earth in 2032, ...

Basically, NASA posted a job listing looking for a full-time "planetary protection officer" to join the agency—and breathless alien hilarity ensued. At a really fundamental level, that's kind of ...

NASA’s Planetary Defense Officer, said in a statement. “This exercise will help us develop more effective communications with each other and with our governments.” The fictional event will ...

a size that could be “a disaster of the scale of anything we’ve seen,” according to Planetary Defense Officer Emeritus Lindley Johnson, who established the office in 2016. Another 11,266 ...