Total solar eclipses are rare, but exactly how rare is now up for debate after the European Space Agency debuted the first images today (June 16) from two new satellites that together operate as an "eclipse machine."
Total solar eclipses currently occur 14 times every 18 years and 11 days somewhere on Earth, which is one every 16 months, on average. According to NASA, they occur once every 366 years in any specific place.
