ulaulaman:

Historic Transit of Venus
British explorer James Cook and astronomer Charles Green drew these stages of the transit of Venus in 1769. Cook and Green observed the transit from Tahiti on June 3, 1769.
Like Neil deGrass Tyson writes on twitter, the Venus transits are rarest astronomical events, and they occurs in pairs eight years a part, about every 100 years.CREDIT: Museum of the History of Science, Oxford

ulaulaman:

Historic Transit of Venus

British explorer James Cook and astronomer Charles Green drew these stages of the transit of Venus in 1769. Cook and Green observed the transit from Tahiti on June 3, 1769.

Like Neil deGrass Tyson writes on twitter, the Venus transits are rarest astronomical events, and they occurs in pairs eight years a part, about every 100 years.

CREDIT: Museum of the History of Science, Oxford

(via scientificillustration)