Frontispiece of Hevelius’s 1662 publication on the 1639 transit of Venus and on transits of Mercury. (Courtesy of Owen Gingerich)

Published October 19, 2015 at 500 × 318 in 1639 Transit of Venus

Frontispiece of Hevelius’s 1662 publication
on the 1639 transit of Venus
and on transits of Mercury.
(Courtesy of Owen Gingerich)