Uploaded August 2026 | Updated September 2026, 3 weeks ago
The speaker explains why asteroid defense comes down to one critical factor: time. While a massive asteroid could be extremely difficult to stop, NASA’s DART mission demonstrated that humans can successfully intercept and alter the motion of an asteroid in space. The breakthrough suggests that with enough warning, planetary defense may be possible—but only if we detect the threat early enough.
The speaker explains why asteroid defense comes down to one critical factor: time. While a massive asteroid could be extremely difficult to stop, NASA’s DART mission demonstrated that humans can successfully intercept and alter the motion of an asteroid in space. The breakthrough suggests that with enough warning, planetary defense may be possible—but only if we detect the threat early enough.
