🚀💥🌍 Scott Manley, the rocket whiz with a physics and astro degree, swapped gaming for spaceflight, breaking down the cosmos on YouTube. Last week, he crunched the numbers on asteroid 2024 YR4—a city killer, not a planet wrecker—plotting a DART-style mission to shove it into deep space. The U.S.? Not sweating it. Oh, and NUKEMAP? Let’s just say it’s a blast. #AsteroidDefense https://boingboing.net/2025/02/12/scott-manley-has-a-plan-to-save-the-earth-from-asteroid-2024-yr4.html