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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]
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 ]
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
This was the first time that a rocket entered orbit after launching from a privately owned and operated spaceport. China Chinese private company i-Space successfully launched its Hyperbola-1 rocket from Jiuquan Satellite Launch Center and sent several small payloads, including the CAS-7B amateur radio satellite into Earth orbit on July 25, 2019 ...
13 May 1998 – HGS-1, a communications satellite operated at the time by Hughes Global Services Inc., becomes the first commercial spacecraft to visit the Moon, after flying to within 6,200 km of the lunar surface on a free return trajectory to salvage it from an unusable orbit. [13] [14]
Incumbents adjust to the new world order In 2025, Boeing ( BA ) and Airbus ( AIR.PA ) will sell off their space businesses after failing to keep up with the pace of change.
The previous record of people in orbit was set in May 2023, when for a brief period of time there were 17 people aboard both the International Space Station and China’s Tiangong space station.
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.