NASA spacecraft to crash into asteroid in planetary defense test

A NASA spacecraft is set to crash into an asteroid Monday to test if it can change the object’s course. CBS News space analyst Bill Harwood discusses the DART mission and why it’s happening now. CBS News Streaming Network is the premier 24/7 anchored streaming news service from CBS News and Stations, available free to everyone with access to the Internet. The CBS News Streaming Network is your destination for breaking news, live events and original reporting locally, nationally and around the globe. Launched in November 2014 as CBSN, the CBS News Streaming Network is available live in 91 countries and on 30 digital platforms and apps, as well as on and Paramount . Subscribe to the CBS News YouTube channel: Watch CBS News: Download the CBS News app: Follow CBS News on Instagram: Like CBS News on Facebook: Follow CBS News on