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1954 – Earth rotation aperture synthesis suggested (see e.g. Christiansen and Warburton (1955)) 1956 – Dwingeloo Radio Observatory 25 m telescope completed, Dwingeloo, Netherlands; 1957 – Bernard Lovell and his group complete the Jodrell Bank 250-foot (75 m) steerable radio telescope (the Lovell Telescope)
1975 — BTA-6 is the first major telescope to use an altazimuth mount, which is mechanically simpler but requires computer control for accurate pointing. The Oldest Observatory in the Americas is found in Bogotá, Colombia (1803). 1990 — Hubble Space Telescope (HST) was launched into low Earth orbit
This is a timeline of astronomy. It covers ancient, medieval, Renaissance-era, and finally modern astronomy. ... the effect of Earth's annual movement around the Sun ...
This timeline of artificial satellites and space probes includes uncrewed spacecraft including technology demonstrators, observatories, lunar probes, and interplanetary probes. First satellites from each country are included. Not included are most Earth science satellites, commercial satellites or crewed missions.
The oldest form of astronomy, optical or visible-light astronomy, observes wavelengths of light from approximately 400 to 700 nm. [149] Positioning an optical telescope in space eliminates the distortions and limitations that hamper that ground-based optical telescopes (see Astronomical seeing ), providing higher resolution images.
With a Galilean telescope, the observer could see magnified, upright images on the Earth—what is commonly known as a spyglass—but also it can be used to observe the sky, a key tool for further astronomical discoveries. Galileo showing the Doge of Venice how to use the telescope (fresco by Giuseppe Bertini) Ole Rømer at work
First animals and plants to leave Earth orbit and travel to and around the Moon. First lunar spacecraft to be recovered successfully. USSR Zond 5 [24] 7 December 1968: First orbital ultraviolet observatory. USA (NASA) OAO-2: 21 December 1968: First human excursion beyond low Earth orbit. First in-person observations of Earth from a distance.
Notes on Hans Lippershey's unsuccessful telescope patent in 1608. The first record of a telescope comes from the Netherlands in 1608. It is in a patent filed by Middelburg spectacle-maker Hans Lippershey with the States General of the Netherlands on 2 October 1608 for his instrument "for seeing things far away as if they were nearby." [12] A few weeks later another Dutch instrument-maker ...