Johannes Kepler And The Triumph Of Modern Science Over Medieval Superstition - Best Of Carl Sagan's Cosmos (Part 18). Subscribe to Science & Reason: • http://www.youtube.com/SagansCosmos • http://www.youtube.com/Best0fScience • http://www.youtube.com/FFreeThinker BEST OF CARL SAGAN'S "COSMOS": 1) 10 Years After: Carl Sagan & Ann Druyan Reflect: http://www.youtube.com/watch?v=leTNfwfH0Jc 2) Lost Between Immensity And Eternity: http://www.youtube.com/watch?v=vIVsDg6U0LU 3) The Realm Of The Galaxies: http://www.youtube.com/watch?v=1axoV6HhWfI 4) Our Galaxy, The Milky Way: http://www.youtube.com/watch?v=eOazBTHzRYA 5) Our Solar System: http://www.youtube.com/watch?v=iBqjob-UVeo 6) Eratosthenes And The Round Earth Model: http://www.youtube.com/watch?v=en5UKtcNujI 7) The Library Of Alexandria: http://www.youtube.com/watch?v=vVQs4B2jAW0 8) A Short History Of The Universe: http://www.youtube.com/watch?v=7n2r0qOxJ6k 9) Artificial And Natural Selection: http://www.youtube.com/watch?v=i3uToVWZkWM 10) The Cosmic Year: http://www.youtube.com/watch?v=yFqbm_94nTM 11) Tree Of Life - 4 Billion Years Of Evolution: http://www.youtube.com/watch?v=KF0UECN4ndA 12) The Miracle Of Life: http://www.youtube.com/watch?v=TOyojWeOYNA 13) DNA - The Common Basis Of Life: http://www.youtube.com/watch?v=ecmuvjSykf8 14) Abiogenesis The Origin Of Life: http://www.youtube.com/watch?v=yet1xkAv_HY 15) Astronomy vs Astrology: http://www.youtube.com/watch?v=ImaQS9NJ0nI 16) Pictures In The Sky: http://www.youtube.com/watch?v=iwCAwc4bge4 17) Ancient Astronomy: http://www.youtube.com/watch?v=H-5dwJwau1Y 18) Triumph Of Modern Science Over Medieval Superstition: http://www.youtube.com/watch?v=8lfmRqT-B_c 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. • http://www.carlsagan.com 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). • http://en.wikipedia.org/wiki/Johannes_Kepler .
Johannes Kepler Triumph Of Modern Science Over Medieval Superstition Best Carl Sagan Sagans Cosmos Nicolaus Copernicus Claudius Ptolemaeus Ptolemy Martin Luther Newton Tycho Brahe Galileo Galilei Maulbronn Tübingen Graz Scientists Astronomy Astronomer Astrophysics Education Educational SETI Big Bang Space Galaxies Solar System Planets Physics Lecture Videos Series Einstein Theory Relativity Black Holes Dark Matter Energy Milky Way Galaxy Atoms Speed Light Gravity
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) http://www.mpia.de/IRSPACE/Tycho_release
Animation showing the evolution of the light echoes from the supernova explosion. This animation illustrates how a light echo works and how it can be used for time travel. A supernova explosion acts like a cosmic flashbulb. The wave of light from the explosion zips through space. When the light wave is hitting dust particles of an interstellar cloud, some light is reflected back. This reflected light forms a secondary wave of light which is delayed relative to the original one by some time this is called light echo. In the year 1572 the direct light wave from a supernova explosion swept past Earth and was observed by Tycho Brahe and others. Now, more than 400 years later a secondary wave of light of the supernova was observed. Using the scientific instruments of the 21st century, the mystery of the famous 16th century supernova could be solved. Credit and copyright Max-Planck-Institut für Astronomie: http://www.mpia.de/IRSPACE/Tycho_release/index.html
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.
An episode of "Great Moments in Science and Technology"