1 min readMessage to Attendees of the 2013 IAA Planetary Defense ConferenceNASA Science Editorial TeamApr 10, 2013 Article Dr. Jim Green, director of NASA Planetary Science, speaks to attendees of the 2013 IAA Planetary Defense Conference in April 2013. Share Details Last Updated Jan 24, 2024 Related TermsPlanetary DefensePlanetary Defense Coordination OfficeThe Solar System Explore More 5 min read NASA Orbiter Shines New Light on Long-Running Martian Mystery Results from an enhanced radar technique have demonstrated improvement to sub-surface observations of Mars. NASA’s… Article 4 days ago 3 min read What’s Up: November 2025 Skywatching Tips from NASA Mars and Mercury will cozy up together in the night sky just after sunset on… Article 1 week ago 6 min read NASA’s Mars Spacecraft Capture Images of Comet 3I/ATLAS Two orbiters and a rover captured images of the interstellar object — from the closest… Article 1 week ago Keep Exploring Discover More Topics From NASA Sun Facts About Earth Asteroids, Comets & Meteors Kuiper Belt