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Period: Feb 19, 1473 to May 24, 1543
Nicolaus Copernicus
was a Renaissance astronomer, and the first person to formulate a comprehensive heliocentric cosmology which is astudy of how the Planets and Earth revolve around the Sun. -
Period: Feb 15, 1564 to
Galileo Galilei
Was an Italian Astronomer and Philospher, his achievements include improvements to the telescope and consequent astronomical observations. Galileo has been called the "father of modern observational astronomy." -
Period: Dec 27, 1571 to
Johannes Kepler
was an astronomer, and he and Newton concluded that the two factors that keep the planets in orbit are Interia and Gravity -
Period: Dec 27, 1571 to
Johannes Kepler
He is best known for his eponymous laws of planetary motion. His laws were...
1. The orbit of every planet is an ellipse with the Sun at one of the two foci.
2. A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.
3.The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. -
Period: to
William Herschel
was a German-born British astronomer, he's most famous for the discovery of Uranus in addition to two of its major moons, Titania and Oberon. -
Ceres Asteroid
Ceres is the biggest asteroid in the Solar System. Ceres was discovered on New Years Day in 1801 by Giuseppe Piazzi. -
Hoba
Hoba is the biggest meteoroid ever. -
Earth
Earth is the third planet from the Sun and the densest and fifth-largest of the eight planets in the Solar System. Earth is one of the inner planets -
1930 - Clyde Tombaugh discovers Pluto
Clyde Tombaugh discovers Pluto -
Halley's Comet- 239 B.C.
is the best-known of the short-period comets. Halley is the only short-period comet that is clearly visible to the naked eye from Earth, and the only naked-eye comet that might appear twice in a humans lifet spand. -
Jupitor
Jupiter is the fifth planet from the Sun and the largest planet within the Solar System. Also known as a gas gaint, and known as one of the outer planets. -
Mars ( inner Planet)
Mars is the fourth planet from the Sun in the Solar System. The planet is named after the Roman god of war, Mars. It is often described as the "Red Planet", as the iron oxide prevalent on its surface gives it a reddish appearance. Mars is an inner planet. -
Saturn
Saturn is the sixth planet from the Sun and the second largest planet in the Solar System. Also known as a gas gaint, and known as one of the outer planets. -
Mercury
Mercury is the innermost and smallest planet in the Solar System. Mercruy is one of the inner planets. -
Venus
Venus is the second planet from the Sun. Named after the Roman god of Venus for her love and beauty. Venus is one of the inner plants -
Neptune
Is the 8th and farthest planet from the sun. Neptune is a gas giant and one of the outer planets. -
Uranus
Is the seventh planet from the sun. Uranus is known as one of the Gas giants and is part of the outer planet group. -
Pluto
Pluto is the second largest dwarf planets in the solar system. Pluto was originally classified as a planet, but is now considered the largest member of a distinct population known as the Kuiper belt. Also Pluto differs from the other outer planets because it is made out of ice. Plus tt does not have a vast gaseous atmosphere.
