A NASA spacecraft is on a mission to test technology that could defend Earth in the future. The spacecraft will deliberately crash into an asteroid to see if it can change its path. CBS News senior space analyst Bill Harwood joins CBSN's Lana Zak with more.
from Home - CBSNews.com https://ift.tt/318nBIv
from Home - CBSNews.com https://ift.tt/318nBIv
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