Asteroid 2024 YR4 Was Earth’s First Real-Life Defense Test

At this point in history, astronomers and engineers who grew up watching Deep Impact and Armageddon, two movies about the destructive power of asteroid impacts, are likely in relatively high ranking positions at space agencies. Don’t Look Up also provided a more modern, though more pessimistic (or, unfortunately, realistic?), look at what might potentially happen if a “killer” asteroid is found on approach to Earth. So far, life hasn’t imitated art when it comes to potentially one of the most catastrophic events in human history, but most space enthusiasts agree that it’s worth preparing for when it will. A new paper, available in pre-print on arXiv, from Maxime Devogèle of ESA’s Near Earth Object (NEO) Coordination Centre and his colleagues analyzes a dry run that happened around a year ago with the discovery of asteroid 2024 YR4.