No comments | Monday, March 04, 2013
Astronomy
14 Famous astronomers:
John Couch Adams (1819-92, Britain) studied the Leonid meteor shower and predicted the existence of Neptune, which was discovered in 1846.

Edward Emerson Barnard (1857-1923, USA) discovered Barnard's Star and Amalthea, a moon of Jupiter.


Nicolaus Copernicus (1473-1543, Poland) showed that the Sun was at the center of the Solar System.


Galileo Galilei (1564-1642, Italy) was a mathematician who made important discoveries concerning motion and gravity. Galileo built some of the first telescopes used in astronomy and used them to discover many previously unknown space objects.


George Ellery Hale (1868-1938, USA) pioneered the astronomical study of the Sun and founded observatories, one with major telescopes named after him.


Edmond Halley (1656-1742, Britain) predicted the orbits of comets, including the one that bears his name.


William Herschel (1738-1822, Germany) built huge telescopes, compiled catalogues of stars and discovered  moons of Saturn and Uranus.


Edwin Hubble (1889-1953, USA)  Hubble space Telescope was named in his honour. Edwin made important discoveries about galaxies. 


Christiaan Huygens (1629-95, Holland) discovered Saturn's rings and devised the wave theory of light.


Percival Lowell (1855-1916, USA) was a founder of the Lowell Observatory, Arizona. Lowell predicted that a planet would be found in the region where Pluto was later discovered.


Charles Messier (1730-1817, France) studied comets and eclipses, but he is best known for his catalogue of stars.


Isaac Newton (1643-1727, Britain) is considered one of the greatest of all astronomers. His theories of gravity and the motions of planets revolutionized the subject.


Heinrich Olbers (1758-1840, Germany) discovered asteroids and comets, one of which was named after him.


Giuseppe Piazza (1746-1826, Italy) compiled star catalogues and discovered the first asteroid, Ceres, in 1801.


Astronomy milestones:

Astronomy is the scientific study of the universe and the bodies it contains (excluding Earth). Astronomers are the scientists who study astronomy.

Year Milestone
585 BC First prediction of eclipse of the sun
130 BC Hipparchus calculates distance and size of the Moon
AD 1543 Copernicus shows that the Sun is at the center of the Solar System
1609 Planetary motion Law described by Johannes Kepler
1610 Galileo dicovered Moons of Jupiter
1655 Titan, Moon of Saturn discovered by Christiaan Huygens 
1668 First reflecting Telescope builds by Isaac Newton
1687 Isaac Newton publishes theories of the motions of planets, etc.
1705 Edmond Halley predicts return of the comet
1671-84 Four moons of Saturn discovered by Giovanni Cassini
1774 Charles Messier compiles a star catalogue
1781 Uranus the 7th planet, discovered by William Herschel
1801 The first asteroid, Ceres, discovered by Giuseppe Piazzi
1846 Neptune, 8th planet discovered by Johann Galle and Urbain Le Varrier
1787-89 Herschel finds Two moons of Saturn and two of Uranus 
1839-40 First photographs of the Moon
1894 Flagstaff Observatory, Arizona, founded
1905 Einstein's Special Theory of Relativity 1st considered
1908 Giant and dwarf stars described
1923 Galaxies beyond the Milky Way proved
1927 Big Bang theory first proposed
1930 Pluto, the 9th planet discovered by Clyde Tombaugh
1959 First photographs by soviet satellite Luna 3of the far side of the Moon
1961 First quasars discovered
1967 First pulsars identified
1971 Black hole first detected
1973 Skylab space laboratory launched
1976 Rings of Uranus are discovered
1977 Voyager deep space probes are launched
1971 Mariner 9 spacecraft maps Mars
1980 Voyager 1 explores Saturn
1978 Space probes Pioneer I and II reach Venus
1985-89 Voyager 2 discovers the moons of Uranus and Neptune
1994 Comet shoemaker-Levy noticed crashing into Jupiter
1995 Galileo probe reaches Jupiter
1997 Mars Pathfinder lands
1997 Cassini probe launched to Saturn
1998 Begins the construction of International Space Station
1999 Chandra X-Ray Observatory launched
2003 Galileo probe independently crash landed on Jupiter
2006 New Horizons space probe sent to Pluto

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