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INTRODUCTION TO ASTRONOMY Astronomy ? Literally: aster = star + nomie = naming Greek words for “star law” (Astrology was already taken) What are you expected to know Measurements used in astronomy Significant figures Scientific notation Dimensional analysis vocabulary used in astronomy Lots of them History of astronomy Ancient astronomy Modern astronomy Formation and Structure of the universe Earth and Moon Solar system Constellations Galaxies Discovery of the night sky Gravity Light and telescopes Classifying celestial bodies Exploration and into this… into this And then into this….. How can this ? Turn Ever wonder hydrogen A promise and a warning The promise: – You will learn a lot. The warning: – Each lecture builds on material from earlier lectures, so it’s easy to fall behind and hard to catch up again. Astronomy - the branch of science that deals with celestial objects, space, and the physical universe as a whole. celestial-beyond the earth's atmosphere Universe: The space which contains all of the matter and energy in existence. WTD? Astronomy vs. Astrology Astronomy was once just a part of Astrology They both involve making observations of the sky. That is all the two have in common. Astronomy is a “true” science; Astrology is not. Astronomy Astrology vs Astronomers who just finished a PhD will make 35,000$ to 55,000$ their first 5 or so years doing postdoctoral research appointments Astronomers who make the most have published works. (books, video..) Astronomer-scientist who studies celestial bodies This guy made “millions and millions” Carl Sagan R.I.P. Astrologists make an average annual salary of 42,000 $ astrologist - someone who predicts the future by the positions of the planets and sun and Moon Susan Miller This woman makes so much $$ you can’t even find out how much online…… Astrology is NOT a “true” Science but you can make real money from it Astrophysics - the physics of the universe (Astrophysicist ? $51,670 to $170,230 ) Astrobiology – studies the advent and evolution of biological systems in the universe. (astrobiologist? $55,760 to $83,640) Words to know, you must! Astrobiologist Astrobiology Astrologist Astrology Astronomer Astronomy Astrophysicist Astrophysics Celestial Universe LBS top 11 Movies that #10 #8 #7 involve #1 extra-terrestrial activities #9 #5 #3 #4 #2 #11 #6 *Honorable mention, numerous episodes of the Twilight Zone Alien Predator Planet of the Apes 1968 The Thing 1982 Night of the Living Dead (original) Space Balls Close Encounters of the Third Kind Enemy Mine Starman ET These people didn’t need to finish college…. will you ?