PDF-(BOOS)-The Power of Stars

Explores the influence of the sky on both ancient and modern civilization by providing a overview of the many ways in which humans have used the stars as an ordering principle in their cultures and which still inspire us intellectually emotionally and spiritually. the first 40 years, 1953-92 . What is a Blue Straggler?. “The Failure of Occam’s Razor?” . . (Mario . Livio. 1993, ASP Conf. 53, ed. R . Saffer. , p.3). Why has it taken so long?. Inconclusive and confusing early observations. Are They Chemically Distinct to Their Fellow RGB and HB Stars?. M5: SDSS . Simon . Campbell. 1. . Universitat. . Politecnica. de . Catalunya. , Barcelona, Spain. 2. CSPA, . Monash. University, Melbourne, Australia. What are stars?. Stars are balls of hot gas.. They are much larger than planets. and much further from Earth.. The sun is the closest star to Earth.. Most of the gas in the inside of a star is hydrogen and its temperature is over 20 million degrees Fahrenheit. There is also helium, a gas that is formed when the hydrogen molecules join together.. to the Stars. Chapter 1: “Radio & the Saliency of . a Broadcast Star System”. Susan Murray. Creation of Network Radio. 1920s, radio becomes centralized, regulated, & and . a national . industry. Stars come in a wide range of temperatures, sizes, masses and colors. The constellation of Orion is a good example of the variety of stars. How can we learn about stars?. Suppose you are an alien with three days to learn everything you can about the human species. Key Ideas. Distance is the most important & most difficult quantity to measure in Astronomy. Method of Trigonometric Parallaxes. Direct geometric method of finding distances. Units of Cosmic Distance:. Phil Rosenfield, . Fridolin. Weber, Horst . Lenske. Outline. Neutron stars: a short synopsis. The structure of neutron stars. Modeling neutron stars. The equation of state. . Rotating or non-rotating. Amole. Spectra of Science. 2013. What are Stars?. A large celestial body of hot gas that emits light. Greeks grouped stars in patterns called constellations. Use the unit light-year to measure distances between stars. Stars born with more than 8 — 10 M.  . cannot . lose enough mass to become white dwarfs. . These stars die by supernova explosions.. Ignition of “metals”. The core of an old high-mass star gets little . "There are countless suns and countless earths all rotating around their suns in exactly the same way as the seven planets of our system. We see only the suns because they are the largest bodies and are luminous, but their planets remain invisible to us because they are smaller and non-luminous. The countless worlds in the universe are no worse and no less inhabited than our Earth”. B-V color index way of quantifying this - determining spectral class - using two different filters. one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, . Cepheids. Very late in their lives, massive stars can pass briefly through a stage in which they are . unstable.. During this stage, . their outer. parts oscillate . (. ‘. pulsate. ’. ) in . a. nd out. constellations. a. Ancient cultures used . mythology. or everyday items to name constellations. 2. Modern astronomy studies . 88 . constellations. 3. Some constellations are not . visible. all year because Earth revolves around the Sun. Stars 1. Patterns of stars – constellations a. Ancient cultures used mythology or everyday items to name constellations 2. Modern astronomy studies 88 constellations 3. Some constellations are not