Bennu asteroid poses greater threat to Earth than previously thought, Nasa says
Researchers from the space agency used precision-tracking data from the OSIRIS-REx spacecraft (pictured above) to better understand the potentially hazardous asteroid’s movements. OSIRIS-REx was launched in 2016 with the primary mission of studying Bennu and ultimately returning a sample of it back to Earth for detailed analysis. It is believed to have successfully collected that sample last October and is currently undergoing the two-year trip back home . With a firmer understanding of its path, Nasa scientists now believe the odds of Bennu striking the Earth have risen from 1 in 2,700 to 1 in 1,750 over the next century or two. In 2135, it will make a close approach with Earth, although it will not pose a danger at that time. Nasa said scientists will need to get a grip on its exact…