Defending Earth from an Asteroid Impact

What if an asteroid was on a collision course with Earth? Could we stop it?

Recent headlines about asteroid 2024 YR4 sparked global speculation—what if it hit Earth? While scientists confirmed we’re safe this time, the reality remains: one day, an asteroid will be headed our way. We explore asteroid defense methods—from NASA’s DART mission to nuclear deflection, gravity tractors, laser ablation, and planetary shields.