"Every 120 years or so a dark spot glides across the Sun. Small, inky-black, almost perfectly circular, it's no ordinary sunspot. Not everyone can see it, but some who do get the strangest feeling, of standing, toes curled in the damp sand, on the beach of a South Pacific isle...."
Interesting article about Captain Cook's voyage to view the transit of Venus from Tahiti in June 1769. The next transit of Venus occurs June 8th.