NASA asteroid Bennu mission: Why is space agency sending craft to giant space rock? A NASA spacecraft is set to reach a potentially Earth-threatening asteroid today more than two years after it started its journey. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:When Soviets Launched Sputnik, C.I.A. Was Not SurprisedDraconid meteor shower arrives this weekend – weather forecast reveals when best to watchThe Never-Ending Battle Against Sport’s Hidden FoeAsk Well: Is There Any Reason Not to Get a Flu Shot?Yellowstone supervolcano WARNING: Record swarm of earthquakes raises concerns in CaliforniWhen is the Draconid meteor shower 2017? What is the best time to see it THIS WEEKEND?