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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 .
Giovanni Cassini discovered Saturn's fifth satellite in 1672 with a telescope 35 feet (11 m) long. Astronomers such as Johannes Hevelius were constructing telescopes with focal lengths as long as 150 feet (46 m). Besides having really long tubes these telescopes needed scaffolding or long masts and cranes to hold them up.
Jacques Cassini (18 February 1677 – 16 April 1756) was a French astronomer, son of the famous Italian astronomer Giovanni Domenico Cassini. He was known as Cassini II. He was known as Cassini II. Biography
1665 – Cassini determines the rotational speeds of Jupiter, Mars, and Venus. [95] 1668 – Isaac Newton builds his own reflecting telescope, the first fully functional of this kind, and a landmark for future developings as it reduces spherical aberration with no chromatic aberration. [96] 1672 – Cassini discovers Saturn's moons Iapetus and ...
Giovanni Domenico Cassini later discovered four more moons of Saturn and the Cassini division in Saturn's rings. [15] The Sun photographed through a telescope with special solar filter. Sunspots and limb darkening can be clearly seen. Mercury is transiting in the lower middle of the Sun's face.
Jupiter’s striking Great Red Spot has puzzled astronomers for years. Now, they think they know just how old it is and how the cyclone formed in Jupiter’s atmosphere.
The post 24 Astronomy Facts You Never Learned in School appeared first on Reader's Digest. From a bar in the clouds to finding more water from the Moon, outer space is constantly surprising us ...
The following is a list of astronomers, astrophysicists and other notable people who have made contributions to the field of astronomy.They may have won major prizes or awards, developed or invented widely used techniques or technologies within astronomy, or are directors of major observatories or heads of space-based telescope projects.