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720,000 km/h (450,000 mi/h) [8] Orbital period. ~230 million years [8] The Solar System [c] is the gravitationally bound system of the Sun and the objects that orbit it. [9] It was formed 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.
By June 16, 1963, the Union launched a total of six Vostok cosmonauts, two pairs of them flying concurrently, and accumulating a total of 260 cosmonaut-orbits and just over sixteen cosmonaut-days in space. [citation needed] On May 5, 1961, the US launched its first suborbital Mercury astronaut, Alan Shepard, in the Freedom 7 capsule.
5 May 1961: First human-piloted space flight (Alan Shepard). First human-crewed suborbital flight. USA Freedom 7: 19 May 1961: First planetary flyby (within 100,000 km of Venus – no data returned). USSR Venera 1: 6 August 1961: First crewed space flight lasting over twenty four hours by Gherman Titov, who is also the first to suffer from ...
The record for most time in space is held by Russian cosmonaut Oleg Kononenko, who has spent 974.34 days in space over five missions and is currently in space onboard Soyuz MS-24/25's one year long-duration mission on ISS. If this mission lasts 300–365 days, Kononenko will have spent a total of 1,036-1,101 days in space.
1959 August 7. First photograph of Earth from orbit. Explorer 6. 1959 September 14. First hard landing on another celestial body (the Moon ) Luna 2. 1959 October 7. First three-axis stabilised spacecraft. First photos of far side of the Moon, covering 70% of the surface invisible from Earth.
That same year, NASA received its largest total budget of $4.5 billion, about 0.5 percent of the gross domestic product (GDP) of the United States at that time. [67] Two main reasons for the cancellation of the last three Apollo missions were the heavy investments in Saturn V and the ever-increasing costs of the Vietnam War to the U.S. in money ...
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