John Coach Adams (British, 1819-92) studied the leonid meteor shower and predicted the existence of neptune, which was discovered in 1846.
Edward Emerson Barnard (USA, 1857-1923 discovered Barnard Star and Amalthea , moon of jupiter.
Nicolaus Copernicus (Poland. 14731543 showed that the Sun was the centre of the Solar System.
GAlileo Galilei aly 15-1662) mathematician who made important discoveries Concavity and motion He but some of the first telescopes used in astronomy and used them to discover many previously unknown space objects .
George Ellery Hale (USA 1868-1938) pioneered the astronomical study of the Sun and founded observatories one with a major telescope named after him.
Edmond Halley (Britain, 1656-1742) predicted the orbits of comets, including the one that bears his name.
William Herschel (Germany/Britain, 17381822 built huge telescopes, compiled catalogues of stars and discovered moons of Saturn and Uranus
Edwin Hubble (USA. 1889-1953) made important discoveries about galaxies. The Hubble Space Telescope was named in his honour.
Christiaan Huygens (Holland. 1629-9g5) discovered Saturn's rings and devised the wave theory of light.
Percival Lowell (USA 18551916 was founder of the Lowell Observatory, Arizona. He predicted that a planet would be found in the region where Pluto was later discovered.
Charles Messier (France, 17301817 studied comets and eclipses, but he is best known for his catalogue of stars.
Isaac Newton (Britain, 16431727 is considered one of the greatest of all astronomers. His theories of gravity and the motions of planets revolutionized the subject.
Heinrich Olbers (Germany 17581840 discovered asteroids and comets, one of which was named after him.
Giuseppe Piazza (Italy, 17461826 compiled star catalogues and discovered the first asteroid, Ceres, in 1801.
Bonus:
First telescopes The first telescopes were made in 1608 by Dutch optician Hans Lippershey. Italian Astronomer Galileo built his own soon after and used it to discover Jupiter's moons The earliest type of telescope, known as a refracting telescope, produced a sight distortion of images (called aberration). Since about 1670, astronomers have preferred to use reflecting telescopes, which
use mirrors that compensate for the distortion.
This articles are grate, they are all amazing astronomers all of them contributes for the world discoveries😍😇