Comet Half News Today

Continue. but no one is questioning the fact that the internet and social media are now playing a critical role in u.s. foreign policy. jessica? >> fast nating shift. thanks, jill. a celestial meeting could shed light on space secrets. nasas spacecraft "stardust" had a close encounter with a comet half the size of new york city. lets get more from john zarrella. >> nasa doomed this as the stardust spacecraft. 200 million miles from earth. we dont have to worry bt it coming near earth. but what h...

And re-evaluation by the end of 2012. >> reporter: what do you say to a patient who has to have an artificial hip removed because that product wasnt safe? >> not every single patient is going to have a perfect experience with that device. and thats unfortunate. were striving to make devices as safe as possible. >> the patients with those faulty devices, it means having a second operation to replace the bad part with a good one. the universe is sending us a valentine of its own. a comet half th...