Instant Alert: This is how big an asteroid would need to be to wipe out Manhattan

MANAGE SUBSCRIPTIONS   |   UNSUBSCRIBE   |   VIEW ONLINE   This is how big an asteroid would need to be to wipe out Manhattan by Alex Kuzoian on Mar 30, 2016, 8:31 AM An asteroid doesn't need to be massive to cause serious damage. The Chicxulub asteroid that wiped out the dinosaurs is estimated to have been about 6 miles in diameter. That may sound like a pretty big space rock, but relative to Earth it's pretty tiny. So how big would an asteroid really need to be to wipe out one of the world's biggest urban centers: New York City? Produced by Alex Kuzoian Follow BI Video: On Twitter   Share the latest business news with your network: Email sent to:   |   Manage your email preferences   |   Unsubscribe Terms of Service   |   Privacy Policy Business Insider. 150 Fifth Avenue, New York, NY 10011