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This is a timeline of space exploration which includes notable achievements, first accomplishments and milestones in humanity's exploration of outer space. This timeline generally does not distinguish achievements by a specific country or private company, as it considers humanity as a whole.
The Orbiting Astronomical Observatory 2 was the first space telescope launched 1968, [10] but the launching of Hubble Space Telescope in 1990 [11] set a milestone. As of 1 December 2022, there were 5,284 confirmed exoplanets discovered. The Milky Way is estimated to contain 100–400 billion stars [12] and more than 100 billion planets. [13]
[5] Description of a space station in Hermann Noordung's The Problem of Space Travel (1929). At the beginning of the 20th century, there was a burst of scientific investigation into interplanetary travel, inspired by fiction by writers such as Jules Verne ( From the Earth to the Moon , Around the Moon ) and H.G. Wells ( The First Men in the ...
Space Odyssey: Voyage to the Planets was accompanied by a 50-minute stand-alone documentary titled Space Odyssey: The Robot Pioneers, first broadcast on BBC Four [2] on 9 November 2004. [12] Like the main programme, The Robot Pioneers was created by Impossible Pictures and produced by the BBC, the Discovery Channel and ProSieben, though also in ...
The Universe is an American documentary television series that features computer-generated imagery and computer graphics of astronomical objects in the universe plus interviews with experts who study in the fields of cosmology, astronomy, and astrophysics.
Notable test flights of spaceflight systems may be listed even if they were not planned to reach space. Some lists are further divided into orbital launches (sending a payload into orbit, whether successful or not) and suborbital flights (e.g. ballistic missiles, sounding rockets, experimental spacecraft).
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Spaceflight (or space flight) is an application of astronautics to fly objects, usually spacecraft, into or through outer space, either with or without humans on board.Most spaceflight is uncrewed and conducted mainly with spacecraft such as satellites in orbit around Earth, but also includes space probes for flights beyond Earth orbit.