Comet Neowise is a dazzling sight, but it's also a reminder of how woefully unprepared we are for dangerous asteroids

Comet Neowise has dazzled stargazers this week, but its surprise appearance highlights one of Earth's greatest vulnerabilities. NASA discovered the comet hurtling towards Earth three months ago, but only because one of its space telescopes got lucky. Our planet is woefully unprepared for the enormous, deadly rocks that hurtle towards us from deep space. But a telescope NASA is developing could track more dangerous asteroids. Visit Business Insider's homepage for more stories. A welcome distracti...