Planetary Defense News
New research reveals that when NASA’s DART (Double Asteroid Redirection Test) spacecraft intentionally impacted the asteroid moonlet Dimorphos in September 2022, it didn’t just change the motion of Dimorphos around its larger companion, Didymos; the crash also shifted the orbit…
Using data from NASA’s James Webb Space Telescope observations collected on Feb. 18 and 26, experts from NASA’s Center for Near-Earth Object Studies at the agency’s Jet Propulsion Laboratory in Southern California have refined near-Earth asteroid 2024 YR4’s orbit and…
NASA’s Planetary Defense Coordination Office tracks NASA’s planetary defense efforts, near-Earth object close approaches, and other key facts about comets and asteroids that could pose an impact hazard with Earth. The infographic above reflects data as of December 2025. Each…
