NASA launched five nearly identical, van-size Lunar Orbiter satellites in 1966 and 1967 to map the Moon and identify safe Apollo landing sites.
NASA launched five nearly identical, van-size Lunar Orbiter satellites in 1966 and 1967 to map the Moon and identify safe Apollo landing sites.
NASA's SNAP-10A, launched in 1965, was the only nuclear reactor the United States had previously deployed in space before current lunar plans.
Apollo lunar-module astronauts stood side by side only 16 inches apart, viewing the lunar surface through two two-square-foot windows.
Apollo lunar-module astronauts stood side by side only 16 inches apart, viewing the lunar surface through two two-square-foot windows.
NASA's SNAP-10A, launched in 1965, was the only nuclear reactor the United States had previously deployed in space.
About 30 hours after launch, Apollo 7 rendezvoused with its spent Saturn IB second stage, coming within 70 feet of the tumbling rocket without using radar data.
Apollo 8 was the first successful crewed mission to orbit the moon and return to Earth.
The Age of Discovery is sometimes synonymous with the first wave of European colonization.
About 30 hours after launch, Apollo 7 rendezvoused with its spent Saturn IB second stage, coming within 70 feet of the tumbling rocket.
Astronomy achieved a high level of success in the second half of the first millennium.
During Apollo 7, astronaut Donn Eisele's sextant star sightings were sometimes obscured by flurries of vented, frozen urine crystals.
During Apollo 7, astronaut Donn Eisele's sextant star sightings were sometimes obscured by flurries of vented, frozen urine crystals.
George Mueller's 'all-up' testing philosophy meant the Saturn V's first flight used all three live stages and a live Apollo command and service module, rather than testing stages incrementally with ballast.
Film director and explorer James Cameron made a solo descent to Challenger Deep in 2012.
Apollo 7 made the first live television broadcast from an American spacecraft, during which the crew displayed hand-lettered cue cards reading 'From the Apollo Room, High Atop Everything' and 'Keep Those Cards and Letters Coming In, Folks.'
Apollo 7 made the first live television broadcast from an American spacecraft, during which the crew displayed hand-lettered cue cards reading 'From the Apollo Room, High Atop Everything' and 'Keep Those Cards and Letters Coming In, Folks.'
The Apollo lunar module's Primary Guidance and Navigation Section (PGNS) was the first digital autopilot used in a manned spacecraft.
The Apollo lunar module's Primary Guidance and Navigation Section (PGNS) was the first digital autopilot used in a manned spacecraft.
Multiple countries sent scientific expeditions around the world to observe the 1874 transit of Venus.
Film director James Cameron made a solo descent to Challenger Deep in 2012.
Apollo astronauts had to perform some return maneuvers while their spacecraft was behind the moon and outside communications range with Earth.
Lunar Orbiter 3 photographed the Moon from February 15 to 23, 1967, and confirmed safe landing sites for the Apollo program.
Lunar Orbiter 3 photographed the Moon from February 15 to 23, 1967, and confirmed safe landing sites for the Apollo program.
North European cultures showed astronomical interest in early history.
Astrobiology as a discipline is founded on the premise that life may exist beyond Earth.
Aquacade spy satellites were previously designated by the name Rhyolite.
The Apollo Lunar Surface Journal was first published online by Eric M. Jones in mid-1995.
Each Lunar Orbiter satellite carried two cameras—one high-resolution and one medium-resolution—and used 70-millimeter film rather than standard 35-millimeter film.
NASA's SNAP-10A satellite operated for 43 days before stopping.
