We live at a time when giant space rocks are whizzing past our planet with alarming regularity. Sometimes we know in advance that they are coming, and sometimes we don’t. In fact, on July 28th an asteroid the size of a car zipped past our planet “at a range that rivals the orbits of some high-flying satellites”, but we had only spotted it for the very first time on July 26th. If we couldn’t see that one until it was nearly upon us, could it be possible that there are much larger potential threats hurtling toward our planet that we currently know nothing about? (Read More...)