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He observed a new star in the constellation Cassiopeia. Brahe had his own observatory, which was funded by King Frederick, to makes observations with his own instruments. He studied planets throughout their orbit.
http://galileo.rice.edu/sci/brahe.html -
He believed in the Copernican system. Kepler realized that planets don't orbit in a circle. They move in a flat-like circle, ellipses.
http://csep10.phys.utk.edu/astr161/lect/history/kepler.html -
Riccioli made measurements to calculate Earth's radius and the ratio water to land. He described sunspots. He made observations of a double star and of Saturn.
https://www.google.com/search?q=pictures+of+john+baptist+riccioli&biw=1366&bih=597&tbm=isch&imgil=BrhZebOsbsuDpM%253A%253Bhttps%253A%252F%252Fencrypted-tbn1.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcQtDefU4JxKwwqjK7pkGSpT8ZOB_A8py11d0zrpmVW5t5l0zQ8_eA%253B120%253B136%253BS2Cn7Xac_YRmlM%253Bhttp%25253A%25252F%25252Fwww.tayabeixo.org% -
Galileo noticed that the moon was uneven and it had a rough surface. He made a 10 power telescope. With a 30 power telescope, he noticed 3 stars by Jupiter, that appeared in a straight line.
https://www.google.com/search?q=picture+of+galileo+galilei&biw=1366&bih=597&tbm=isch&imgil=kwf5gRcvNStJgM%253A%253Bhttps%253A%252F%252Fencrypted-tbn1.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcQ84CBcJ3RTVVqq3UQYP4Y9OZIwMg3fopgiqu0mH07Pm9kmubXD5Q%253B330%253B405%253BwmjPq7lvsAcFqM%253Bhttp%25253A%25252F% -
Giovanni discovered Saturn's 4 moons. He discovered the Cassini division in Saturn's rings. His name is used for a space exploration, called Cassini Orbiter.
http://www.space.com/18902-giovanni-cassini.html -
Newton designed and made a reflecting telescope. This invention proved his theory of light and color. He discovered the 3 laws of bodies in motion.
http://www.bbc.co.uk/history/historic_figures/newton_isaac.shtml -
Christoph was an amateur astronomer. He saw the great comet of 1683 before Hevelius.
http://en.wikipedia.org/wiki/Christoph_Arnold -
He determined a method for observing transits of Venus across the sun. This helped him to determinne the distance of the Earth from the Sun. Edmond calculated the ordit of a comet.
http://www.bbc.co.uk/history/historic_figures/halley_edmond.shtml -
Charles discovered 13 comets. Also discovered 40 nebulae. He recorded his findings along with other astronomers findings in the Messier catalog.
http://www.seasky.org/space-exploration/astronomers-charles-messier.html -
Joseph-Louis explained the orbits of Jupiter's moons in mathmatical terms. He explained that motions of objects are affected by their gravitational attractions. There is a moon crater named after him.
https://www.google.com/search?q=pictures+of+joseph+louis+lagrange&biw=1366&bih=597&tbm=isch&imgil=80UUgkzXza9nvM%253A%253Bhttps%253A%252F%252Fencrypted-tbn0.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcQRmf9Kcj6C7JdKP5xuWAOcZDRR_tR7wcdeb2DAo0avDQyYZNuK%253B235%253B264%253BcPXR40qmWTWzhM%253Bhttp -
William discovered Uranus. He cataloged 2,500 celestial objects, that are still used today. He used measurements to find out what is now known as infrared radiation.
http://www.space.com/17432-william-herschel.html -
Giuseppi discovered Ceres. It was the first and largest asteroid. He supervised the Palermo catalogue of stars.
http://www.google.com/imgres?imgrefurl=http%3A%2F%2Fwww.sil.si.edu%2Fdigitalcollections%2Fhst%2Fscientific-identity%2FCF%2Fby_name_display_results.cfm%3Fscientist%253DPiazzi%2C%252520Giuseppe&tbnid=XPBEnI0AoDo0VM:&docid=DmkCt0RJ6vijbM&h=247&w=200 -
He discovered Bode's law. The law was used to approximate the distance between planets and the Sun. He published a collection of 20 star maps.
https://www.google.com/search?q=pictures+of+johann+bode&tbm=isch&imgil=p0CbJXvUVLMSAM%253A%253Bhttps%253A%252F%252Fencrypted-tbn3.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcSk6cKQl8jqQWkT0lBK0V_TKPLEuRsv_olb2ICPy0GivvcnvWkGZA%253B180%253B233%253B9BYHeFvSWT3wgM%253Bhttp%25253A%25252F%25252Fwww.astronomyfactbook.com%25252Fastronomers%25252Fbode.htm&sou -
She was the first women to discover a comet. Caroline recieved the gold metal of the Royal Astronomial Society.
http://www.space.com/17439-caroline-herschel.html
