NASA asteroid tracker: Look out for 820FT asteroid headed for Earth approach at 38,000MPH A COLOSSAL asteroid measuring up to 820ft in diameter will swing past the planet this week at speeds reaching 38,000mph, NASA’s asteroid trackers have revealed. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Opioid Sales Reps Swarmed New York at Height of CrisisAntarctica SHOCK: How researchers dived 1000m below ice and found BIZARRE mutant creatureTime travel PROOF: How Brian Cox claimed future travel IS possible – ‘We’ve DONE it!’Should That Minor Planet Be Named Gonggong? Astronomers Want the Public’s HelpModern Love: I Had to Do It Without Telling My BelovedNASA reveals GROUNDBREAKING research on twin astronauts - ‘Most comprehensive EVER’