Less than 10 feet across, asteroid 2017 EA made its closest approach at 9:04 AM EST (14:04 Universal Time) last Thursday, coming 20 times closer than the Moon, just 9,000 miles (14,500 km) over the eastern Pacific Ocean, according to a NASA statement. The space agency’s Center for Near-Earth Object Studies (CNEOS), which operates out of the Jet Propulsion Laboratory (JPL) in California, tracks asteroids and comets that come close to the Earth and computes very precise orbits for them but did not detect this asteroid until just six hours before its closest approach to Earth. It was first sighted...