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Giovanni [a] Domenico Cassini, also known as Jean-Dominique Cassini (8 June 1625 – 14 September 1712) was an Italian (naturalised French) [1] mathematician, astronomer, astrologer and engineer. Cassini was born in Perinaldo, [2] [3] near Imperia, at that time in the County of Nice, part of the Savoyard state.
Versailles on the Cassini map. The Cassini Map or Academy's Map is the first topographic and geometric map made of the Kingdom of France as a whole. It was compiled by the Cassini family, mainly César-François Cassini (Cassini III) and his son Jean-Dominique Cassini (Cassini IV) in the 1700s. It was on a scale of one line to 100 toises, i.e ...
The Cassini projection (also sometimes known as the Cassini–Soldner projection or Soldner projection [1]) is a map projection first described in an approximate form by César-François Cassini de Thury in 1745. Its precise formulas were found through later analysis by Johann Georg von Soldner around 1810. [2]
Cassini has run low on propellant, and will become an artificial meteor at Saturn on Friday morning as it plunges to its death. NASA is now receiving the last photos ever taken by the Cassini ...
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Determining the length of a single day on a planet is usually pretty easy. You just pick a landmark and wait for it to reach the exact same point twice in its rotation and you have your answer.
Neith is a hypothetical natural satellite of Venus reportedly sighted by Giovanni Cassini in 1672 and by several other astronomers in following years. It was 'observed' up to 30 times by astronomers until 1770, when there were no new sightings and it was not found during the transit of Venus in 1761 and 1769. [1] [2]
In 1675, Giovanni Domenico Cassini determined that Saturn's ring was composed of multiple smaller rings with gaps between them; [17] the largest of these gaps was later named the Cassini Division. This division is a 4,800-kilometre-wide (3,000 mi) region between the A ring and B Ring. [18]