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First satellite in orbit. [5] USSR 4 October 1957 Earth: Sputnik 2: First animal in orbit, Laika, a dog. USSR 3 November 1957 Earth: Vanguard 1: Oldest satellite still in orbit, in addition to its upper launch stage. Expected to stay in orbit 240 years. Ceased transmission in May 1964. USA 17 March 1958 Earth: Pioneer 1
The list for the year 2025 and for its subsequent years may contain planned launches, but the statistics will only include past launches. For the purpose of these lists, a spaceflight is defined as any flight that crosses the Kármán line , the FAI -recognized edge of space, which is 100 kilometres (62 miles) above mean sea level (AMSL) . [ 1 ]
It may also refer to the time it takes a satellite orbiting a planet or moon to complete one orbit. For celestial objects in general, the orbital period is determined by a 360° revolution of one body around its primary, e.g. Earth around the Sun. Periods in astronomy are expressed in units of time, usually hours, days, or years.
A new record was set for the largest number of humans in orbit (14) on 16 September 2021, [9] and a new record for the largest number of humans in space (19) at one time (10 in the ISS, 3 on board the Tiangong Space Station, 6 on board New Shepard-19) was set on 11 December 2021. [10]
Repeat orbit: An orbit where the ground track of the satellite repeats after a period of time. Gangale orbit: a solar orbit near Mars whose period is one Martian year, but whose eccentricity and inclination both differ from that of Mars such that a relay satellite in a Gangale orbit is visible from Earth even during solar conjunction. [28]
Year Date Origin Name Launch vehicle Status Description Mass 1957 October 4 Soviet Union: Sputnik 1: Sputnik-PS: Success: The first human-made object to orbit Earth. 83.6 kg (183.9 lb) November 3 Soviet Union: Sputnik 2: Sputnik-PS: Success: The first satellite to carry a living animal, a dog named Laika. 508 kg (1,118 lb) December 6 US ...
During that time period the fleet logged 1,322 days, 19 hours, 21 minutes and 23 seconds of flight time. [2] The longest orbital flight of the Shuttle was STS-80 at 17 days 15 hours, while the shortest flight was STS-51-L at one minute 13 seconds when the Space Shuttle Challenger broke apart during launch.
The standard lunar orbit for Apollo missions was planned as a nominal 60-nautical-mile (110 km) circular orbit above the Moon's surface. Initial lunar orbit insertion was an ellipse with a perilune of 60.0 nautical miles (111.1 km) and an apolune of 168.5 nautical miles (312.1 km), at an inclination of 12° from the lunar equator.