astronomy

Edmond Halley and his famous Comet

Edmond Halley and his famous Comet

Sir Edmond Halley (1656-1742)©Klaus-Dieter Keller, wikipedia On November 8, 1656, Sir Edmond Halley was born. The astronomer, geophysicist, mathematician, meteorologist, and physicist, was best known for computing the orbit of the eponymous Halley’s Comet. Edmond Halley was born in England to the family of a wealthy soap maker. Therefore, Halley was able to receive a proper education and started studying at Queen’s College in Oxford, where he already published his first scientific…
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The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

The Arecibo Radio Telescope – Looking for Extraterrestrial Signals

The Arecibo radio telescope is the largest single-dish telescope in the world. 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…
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Eris – The Planet of Discord

Eris – The Planet of Discord

On October 21, 2003, a photograph of the nocturnal sky was taken, where almost 2 years later, in January 2005, evidence was raised that there might be a 10th planet at the borders of our solar system: Eris, located in the Kuiper Belt and named after the Greek godess of discord. And discord it should be, because Eris as a planet is rather small and astronomers were arguing, whether it is a…
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Much More Powerful Than Expected – Kepler’s Supernova

Much More Powerful Than Expected – Kepler’s Supernova

X-ray, Optical and Infrared Composite of Kepler’s Supernova Remnant On October 17, 1604, the famous German astronomer Johannes Kepler started his observations of the 1604 supernova, named after him as Kepler’s Supernova or Kepler’s Star. Special about this ‘new’ star was it being the very last observed supernova in our own galaxy, the milkyway. The supernova was first observed on October 9, 1604, a few days before Kepler really looked at it.…
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Galileo Galilei and his Telescope

Galileo Galilei and his Telescope

Galileo Galilei showing the Doge of Venice how to use the telescope,Fresco at Villa Andrea Ponti, Varese, 1858 On August 25, 1609, Galileo Galilei publicly demonstrated his newly built telescope for the first time to Venetian lawmakers. Besides its astronomical value Galileo’s telescope was also a profitable sideline for him selling telescopes to merchants who found them useful both at sea and as items of trade. Galileo published his initial telescopic astronomical…
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