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18 de jun. de 2024 · Learn about the objectives, milestones, and achievements of Project Mercury, the first human spaceflight program by the United States from 1958 to 1963. Explore the biographies, missions, and technical details of the Mercury 7 astronauts and their spacecraft.
Há 4 dias · Mercury, any of the first series of crewed spaceflights conducted by the United States. The series began with the suborbital flight of Alan Shepard in 1961; launched the first American into orbit, John Glenn, in 1962; and ended with the 34-hour flight of Gordon Cooper in 1963.
- The Editors of Encyclopaedia Britannica
Há 5 dias · Space exploration - Mercury Missions, Astronauts, Technology: The initial U.S. effort to launch a human into space was known as Project Mercury. It was carried out by NASA, which had been given that responsibility over air force objections.
Há 3 dias · A Mercury-bound spacecraft launched from Earth must travel over 91 million kilometres (57 million miles) into the Sun's gravitational potential well. Mercury has an orbital speed of 47.4 km/s (29.5 mi/s), whereas Earth's orbital speed is 29.8 km/s (18.5 mi/s).
13 de jun. de 2024 · The MESSENGER spacecraft is the first ever to orbit the planet Mercury, and the spacecraft's seven scientific instruments, like the MASCS instrument used to create this colorful illustration of Mercury’s surface, are unraveling the history and evolution of the innermost planet.
10 de jun. de 2024 · Official portrait of astronaut John H. Glenn Jr., the first American to orbit Earth in a Project Mercury spacecraft.
21 de jun. de 2024 · A global map of Mercury's surface created from images obtained by NASA's MESSENGER spacecraft. The colors are not what the eye would see, but are related to compositional variations on the surface.
