NASA's asteroid chaser swings by Earth

NASA's asteroid-chasing spacecraft is swinging by Earth today on its way to a space rock. Launched a year ago, Osiris-Rex was on track to pass within about 11,000 miles (17,700 kilometers) of the home planet Friday afternoon - above Antarctica. Those with telescopes were advised to eyes set on the sky at 5.52 pm BST (12.52pm ET) in order to have a chance of seeing the vessel before it departs. It needs Earth's gravity as a slingshot to put it on a path toward the asteroid Bennu.