Day: June 25, 2026

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

This collection of material relates to the British expeditions of 1874 to observe the rare astronomical phenomenon of the transit of Venus . Occurring in pairs over a century apart, transits of Venus had previously been observed in 1639 , 1761 and 1769 . The 18th- and 19th-century transits were marked by the efforts of many individuals and institutions across Europe and America to carry out …

By making and timing near-simultaneous observations from precisely located observing stations across the globe, astronomers hoped to measure solar parallax.

By making and timing near-simultaneous observations from precisely located observing stations across the globe, astronomers hoped to measure solar parallax.

By making and timing near-simultaneous observations from precisely located observing stations across the globe, astronomers hoped to measure solar parallax.