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ALMA – the largest and most expensive ground-based astronomical project

ALMA – the largest and most expensive ground-based astronomical project

Harald Sack
On October 3, 2011, first images produced by the Atacama Large Millimeter Array were released to the press. The Atacama Large Millimeter/submillimeter Array (ALMA) is an astronomical interferometer of radio telescopes in the Atacama desert of northern Chile. ALMA is currently the largest and most expensive ground-based astronomical project, costing between US$1.4 and 1.5 billion. The ALMA Interferometer ALMA is an interferometer, i.e. many small radio telescopes working together as a single large…
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astronomy
Sir Bernard Lovell and the Radioastronomy

Sir Bernard Lovell and the Radioastronomy

Harald Sack
On August 31, 1913, English physicist and radio astronomer Sir Bernard Lovell was born. He was a pioneer in radar and radio telescopes and especially renowned for creating the Jodrell Bank radio telescope, the only antenna that could track rockets in space in the early years of the space race between the United States and the Soviet Union. “Out of all possible universes, the only one which can exist, in the sense that…
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astronomy
The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

Harald Sack
On November 1, 1963, the Arecibo radio telescope, by that time the earth‘s largest radio telescope, has been inaugurated in Arecibo, Puerto Rico. It is operated by the company SRI International under cooperative agreement with the National Science Foundation and is also called the National Astronomy and Ionosphere Center, although “NAIC” refers to both the observatory and the staff that operates it. Construction and Functionality The Arecibo telescope was built between the…
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astronomy
Karl Jansky and the Discovery of Cosmic Radio Waves

Karl Jansky and the Discovery of Cosmic Radio Waves

Harald Sack
On October 22, 1905, American physicist and radio engineer Karl Guthe Jansky was born. In August 1931 Jansky first discovered radio waves emanating from the Milky Way. He is considered one of the founding figures of radio astronomy. Karl Jansky – Background Karl Jansky was born the third of six children in what was then the Territory of Oklahoma where his father, Cyril M. Jansky, the descendent of Czech immigrants, was Dean of…
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