NASA asteroid WARNING: Why space rock could spark ‘COSMIC WINTER’ on Earth NASA was handed a warning over the potential for a future asteroid to spark a “cosmic winter” if it strikes Earth, during a documentary on the space rocks. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Diamonds indistinguishable from the real thing GROWN at Cardiff UniversityDead Sea Scrolls: NASA technology helps unravel secrets of ancient manuscriptsICE AGE WARNING: Sunspots begin to disappear from Sun as Earth braces for cold snapTrilobites: Lightning Struck Her Home. Then Her Brain Implant Stopped Working.Climate Change DEAD ZONE: Scientists warn clock is ticking as ‘oceans suffocate’An Ancient Horse Is Unearthed in a Utah Backyard