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

Published October 19, 2015 at 322 × 500 in 1639 Transit of Venus

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