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Episodio 3: La armonía de los mundos
Astronomía vs astrología
Ptolomeo y el modelo geocéntrico
Johannes Kepler y Tycho Brahe
Las Leyes de Kepler.
Episode 3: The Harmony of the Worlds
2. Astronomers vs. Astrologers
Astronomy vs. astrology
Careful observations, fuzzy thinking and pious fraud.
4. Laws of Nature
Constellations and ancient astronomy
Anasazian ceremonial calendar
Ptolemy and the geocentric world view
8. Johannes Kepler
9. Kepler and Tycho Brahe
10. Kepler's Laws
11. The Somnium
The first Science Fiction book: The Dream
Johannes Kepler And The Triumph Of Modern Science Over Medieval Superstition - Best Of Carl Sagan's Cosmos (Part 18).
Subscribe to Science & Reason:
BEST OF CARL SAGAN'S "COSMOS":
1) 10 Years After: Carl Sagan & Ann Druyan Reflect:
2) Lost Between Immensity And Eternity:
3) The Realm Of The Galaxies:
4) Our Galaxy, The Milky Way:
5) Our Solar System:
6) Eratosthenes And The Round Earth Model:
7) The Library Of Alexandria:
8) A Short History Of The Universe:
9) Artificial And Natural Selection:
10) The Cosmic Year:
11) Tree Of Life - 4 Billion Years Of Evolution:
12) The Miracle Of Life:
13) DNA - The Common Basis Of Life:
14) Abiogenesis The Origin Of Life:
15) Astronomy vs Astrology:
16) Pictures In The Sky:
17) Ancient Astronomy:
18) Triumph Of Modern Science Over Medieval Superstition:
19) The Mysterious Tonguska Event: coming soon
Carl Edward Sagan, Ph.D. (1934-1996) was an American astronomer, astrochemist, author, and highly successful popularizer of astronomy, astrophysics and other natural sciences. He pioneered exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).
He is world-famous for writing popular science books and for co-writing and presenting the award-winning 1980 television series "Cosmos: A Personal Voyage", which has been seen by more than 600 million people in over 60 countries, making it the most widely watched PBS program in history.
A book to accompany the program was also published. He also wrote the novel "Contact", the basis for the 1997 Robert Zemecki's film of the same name starring Jodie Foster.
During his lifetime, Sagan published more than 600 scientific papers and popular articles and was author, co-author, or editor of more than 20 books. In his works, he frequently advocated skeptical inquiry, secular humanism, and the scientific method.
Johannes Kepler (1571-1630) was a German mathematician, astronomer and astrologer, and key figure in the 17th century scientific revolution. He is best known for his eponymous laws of planetary motion, codified by later astronomers based on his works "Astronomia nova", "Harmonices Mundi", and "Epitome of Copernican Astrononomy". They also provided one of the foundations for Isaac Newton's theory of universal gravitation.
During his career, Kepler was a mathematics teacher at a seminary school in Graz, Austria, an assistant to astronomer Tycho Brahe, the court mathematician to Emperor Rudolf II, a mathematics teacher in Linz, Austria, and an adviser to General Wallenstein. He also did fundamental work in the field of optics, invented an improved version of the refracting telescope (the Keplerian Telescope), and helped to legitimize the telescopic discoveries of his contemporary Galileo Galilei.
Kepler lived in an era when there was no clear distinction between astronomy and astrology, but there was a strong division between astronomy (a branch of mathematics within the liberal arts) and physics (a branch of natural philosophy).
Animation showing the evolution of the supernova remnant over time until today's view.
Artist's illustration of how a supernova remnant is born. The animation starts with the progenitor of Tycho Brahe's supernova of the year 1572. Following a titanic thermonuclear blast, which has blown apart a white dwarf star, material is ejected into interstellar space at an incredibly high velocity of up to 30,000 kilometres per second or one tenth of the speed of light! Over the last 4 centuries the debris have expanded to a diameter of more than 20 light years. Million degree hot gas as well as heated dust particles are seen in an composite image of the remnant today, which has been obtained with the Chandra and Spitzer Space Telescopes and the Calar Alto observatory. This real image concludes the animation.
Credit and copyright:
Max-Planck-Institut für Astronomie
(Ors Hunor Detre, Oliver Krause)
Fundamentals of Physics (PHYS 200)
The focus of the lecture is problems of gravitational interaction. The three laws of Kepler are stated and explained. Planetary motion is discussed in general, and how this motion applies to the planets moving around the Sun in particular.
Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses
This course was recorded in Fall 2006.