Solar eclipses result from a fantastic celestial coincidence of scale and distance || by Christopher Palma :: The Conversation

..."  The relatively small size of the Moon and its shadow make eclipses truly once-in-a-lifetime opportunities. On average, total solar eclipses are visible somewhere on Earth once every few years. But from any one location on Earth, it is roughly 375 years between solar eclipses." ....   More at The Conversation ➜