EDITOR'S NOTE: This reporting of close calls days after the fact is becoming quite the regular thing as of late..hmmm, very interesting! On March 15, astronomers detected an asteroid that had passed closest to Earth on March 11, sweeping in at about the distance of our geostationary satellites. On March 15, 2016, astronomers detected a space rock – now designated as asteroid 2016 EF195 – using the PanSTARRS 1 telescope at Hawaii. Surprisingly, as they analyzed its trajectory, they realized it had been closest to Earth on March 11 at 03:52 UT (March 10 at 10:52 pm ET). This means the asteroid's closest approach occurred 4 to 5 days before it was seen. Moreover, they realized that asteroid 2016 EF195 flyby had passed at about 23,900 miles (38,463 km) from the surface of our planet, or about 0.1 the Earth-moon distance. For comparison, TV and other communications satellites orbit Earth at 22,300 miles. Asteroid 2016 EF195 has a size between 16 to 49 meters (52 to 161). That means this