A large asteroid around 0.9 kilometers (.56 miles) wide will pass close by the Earth on March 21, US space agency NASA said Thursday. Called 2001 FO32, it will make its closest approach to the Earth at a distance of 2 million kilometers (1.25 million miles), according to the NASA-owned Jet Propulsion Laboratory (JPL), managed by the California Institute of Technology. Q: What do we consider “near” Earth? A: About ...