Uploaded July 2026 | Updated September 2026, 2 weeks ago
How much warning would humanity actually need to stop an asteroid from hitting Earth? This short video breaks down why asteroid defense depends on far more than simply spotting a dangerous object in space.
You’ll learn how asteroid size affects the level of risk, why smaller objects can still cause serious destruction, and why early detection is so important. The video also explains what scientists need to figure out before attempting a deflection mission and why even several years of warning may not be as much time as it sounds.
Watch to discover how much progress astronomers have made in finding the largest threats, where the biggest gaps still remain, and what could determine whether an asteroid can be redirected in time.
How much warning would humanity actually need to stop an asteroid from hitting Earth? This short video breaks down why asteroid defense depends on far more than simply spotting a dangerous object in space.
You’ll learn how asteroid size affects the level of risk, why smaller objects can still cause serious destruction, and why early detection is so important. The video also explains what scientists need to figure out before attempting a deflection mission and why even several years of warning may not be as much time as it sounds.
Watch to discover how much progress astronomers have made in finding the largest threats, where the biggest gaps still remain, and what could determine whether an asteroid can be redirected in time.
