Astronomy and Anthropologie in the Eighteenth Century
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March-April 2017.Pub
THE OBSERVER The Newsletter of Central Valley Astronomers of Fresno March-April 2017 NASA and ESA Announce “ “It is part of the na- ture of man to start Seven Earth-like Planets with romance and build Within 40 Light Years of Our to reality.” -Ray Solar System Bradbury, referring to the American manned space program In This Issue Profiles in Astrono- my-Tobias Mayer Amateur astrono- mers Needed for Comet Study Eugene Cernan RIP On February 21, 2017, NASA and ESA, the European Space Agency, jointly announced that a star known as Possible Orion-SLS TRAPPIST-1 had seven Earth-like planets circling it. The Flight in 2019 discovery also appeared in the science magazine Nature The Vilnius Obser- the same day. TRAPPIST-1 is a dwarf star approximately vatory 40 light years from Earth. According to the announce- ment and article, all the planets are rocky, not gaseous, Musk Meets with and some may have atmospheres. The TRAPPIST Trump about Mars (Transiting Planets and Planetesimals Small Telescope) telescope is part of ESA’s La Silla Observatory in Chile, Europa Drilling Mis- was specifically designed to find exoplanets, and saw sion on the Books first light in 2010 . It is named in honor of the Trappist CVA members order of monks. Sound Off Artist’s image from NASA/JPL The Observer-The Newsletter or Central Valley Astronomers Vol 65 Issue 2 March-April 2017 From the editor- Central Valley Astrono- mers of Fresno As written in the What’s New in Space column, things Web address have been happening very quickly in the last few weeks. -
Messier Objects
Messier Objects From the Stocker Astroscience Center at Florida International University Miami Florida The Messier Project Main contributors: • Daniel Puentes • Steven Revesz • Bobby Martinez Charles Messier • Gabriel Salazar • Riya Gandhi • Dr. James Webb – Director, Stocker Astroscience center • All images reduced and combined using MIRA image processing software. (Mirametrics) What are Messier Objects? • Messier objects are a list of astronomical sources compiled by Charles Messier, an 18th and early 19th century astronomer. He created a list of distracting objects to avoid while comet hunting. This list now contains over 110 objects, many of which are the most famous astronomical bodies known. The list contains planetary nebula, star clusters, and other galaxies. - Bobby Martinez The Telescope The telescope used to take these images is an Astronomical Consultants and Equipment (ACE) 24- inch (0.61-meter) Ritchey-Chretien reflecting telescope. It has a focal ratio of F6.2 and is supported on a structure independent of the building that houses it. It is equipped with a Finger Lakes 1kx1k CCD camera cooled to -30o C at the Cassegrain focus. It is equipped with dual filter wheels, the first containing UBVRI scientific filters and the second RGBL color filters. Messier 1 Found 6,500 light years away in the constellation of Taurus, the Crab Nebula (known as M1) is a supernova remnant. The original supernova that formed the crab nebula was observed by Chinese, Japanese and Arab astronomers in 1054 AD as an incredibly bright “Guest star” which was visible for over twenty-two months. The supernova that produced the Crab Nebula is thought to have been an evolved star roughly ten times more massive than the Sun. -
Chapter Two: the Astronomers and Extraterrestrials
Warning Concerning Copyright Restrictions The Copyright Law of the United States (Title 17, United States Code) governs the making of photocopies or other reproductions of copyrighted materials, Under certain conditions specified in the law, libraries and archives are authorized to furnish a photocopy or other reproduction, One of these specified conditions is that the photocopy or reproduction is not to be used for any purpose other than private study, scholarship, or research , If electronic transmission of reserve material is used for purposes in excess of what constitutes "fair use," that user may be liable for copyright infringement. • THE EXTRATERRESTRIAL LIFE DEBATE 1750-1900 The idea of a plurality of worlds from Kant to Lowell J MICHAEL]. CROWE University of Notre Dame TII~ right 0/ ,It, U,,;v"Jily 0/ Camb,idg4' to P'''''' a"d s,1I all MO""" of oooks WM grattlrd by H,rr,y Vlf(;ff I $J4. TM U,wNn;fyltas pritr"d and pu"fisllrd rOffti",.ously sincr J5U. Cambridge University Press Cambridge London New York New Rochelle Melbourne Sydney Published by the Press Syndicate of the University of Cambridge In lovi ng The Pirr Building, Trumpingron Srreer, Cambridge CB2. I RP Claire H 32. Easr 57th Streer, New York, NY 1002.2., U SA J 0 Sramford Road, Oakleigh, Melbourne 3166, Australia and Mi ha © Cambridge Univ ersiry Press 1986 firsr published 1986 Prinred in rh e Unired Srares of America Library of Congress Cataloging in Publication Data Crowe, Michael J. The exrrarerresrriallife debare '750-1900. Bibliography: p. Includes index. I. Pluraliry of worlds - Hisrory. -
The Midnight Sky: Familiar Notes on the Stars and Planets, Edward Durkin, July 15, 1869 a Good Way to Start – Find North
The expression "dog days" refers to the period from July 3 through Aug. 11 when our brightest night star, SIRIUS (aka the dog star), rises in conjunction* with the sun. Conjunction, in astronomy, is defined as the apparent meeting or passing of two celestial bodies. TAAS Fabulous Fifty A program for those new to astronomy Friday Evening, July 20, 2018, 8:00 pm All TAAS and other new and not so new astronomers are welcome. What is the TAAS Fabulous 50 Program? It is a set of 4 meetings spread across a calendar year in which a beginner to astronomy learns to locate 50 of the most prominent night sky objects visible to the naked eye. These include stars, constellations, asterisms, and Messier objects. Methodology 1. Meeting dates for each season in year 2018 Winter Jan 19 Spring Apr 20 Summer Jul 20 Fall Oct 19 2. Locate the brightest and easiest to observe stars and associated constellations 3. Add new prominent constellations for each season Tonight’s Schedule 8:00 pm – We meet inside for a slide presentation overview of the Summer sky. 8:40 pm – View night sky outside The Midnight Sky: Familiar Notes on the Stars and Planets, Edward Durkin, July 15, 1869 A Good Way to Start – Find North Polaris North Star Polaris is about the 50th brightest star. It appears isolated making it easy to identify. Circumpolar Stars Polaris Horizon Line Albuquerque -- 35° N Circumpolar Stars Capella the Goat Star AS THE WORLD TURNS The Circle of Perpetual Apparition for Albuquerque Deneb 1 URSA MINOR 2 3 2 URSA MAJOR & Vega BIG DIPPER 1 3 Draco 4 Camelopardalis 6 4 Deneb 5 CASSIOPEIA 5 6 Cepheus Capella the Goat Star 2 3 1 Draco Ursa Minor Ursa Major 6 Camelopardalis 4 Cassiopeia 5 Cepheus Clock and Calendar A single map of the stars can show the places of the stars at different hours and months of the year in consequence of the earth’s two primary movements: Daily Clock The rotation of the earth on it's own axis amounts to 360 degrees in 24 hours, or 15 degrees per hour (360/24). -
Remembering Bill Bogardus Photographing the Moon
Published by the Astronomical League Vol. 71, No. 2 March 2019 REMEMBERING BILL BOGARDUS PHOTOGRAPHING THE MOON 7.20.69 5 YEARS TREASURES OF THE LINDA HALL LIBRARY APOLLO 11 THE COSMIC WEB ONOMY T STR O T A H G E N P I E Contents G O N P I L R E B 4 . Reflector Mail ASTRONOMY DAY Join a Tour This Year! 4 . President’s Corner May 11 & 5 . International Dark-Sky Association From 37,000 feet above the Pacific Total Eclipse Flight: Chile October 5, 2019 6 . Night Sky Network Ocean, you’ll be high above any clouds, July 2, 2019 For a FREE 76-page seeing up to 3¼ minutes of totality in a dark sky that makes the Sun’s corona look 6 . Deep-Sky Objects Astronomy Day Handbook incredibly dramatic. Our flight will de- full of ideas and suggestions, part from and return to Santiago, Chile. 9 . Remembering Bill Bogardus skyandtelescope.com/2019eclipseflight go to: 10 . From Around the League www.astroleague.org Click on "Astronomy Day” African Stargazing Safari Join astronomer Stephen James PAGE 19 13 . Observing Awards Scroll down to "Free O’Meara in wildlife-rich Botswana July 29–August 4, 2019 Astronomy Day Handbook" for evening stargazing and daytime 14 . Basic Small-Scope Lunar Imaging safari drives at three luxury field For more information, contact: camps. Only 16 spaces available! 18 . The Vault of Heaven – Gary Tomlinson Optional extension to Victoria Falls. ̨̨̨̨̨̨̨̨̨̨̨̨̨̨̨Treasures of the Linda Hall Library Astronomy Day Coordinator skyandtelescope.com/botswana2019 [email protected] 24 . The Cosmic Web Iceland Aurorae 27 . -
Self-Organizing Systems in Planetary Physics: Harmonic Resonances Of
Self-Organizing Systems in Planetary Physics : Harmonic Resonances of Planet and Moon Orbits Markus J. Aschwanden1 1) Lockheed Martin, Solar and Astrophysics Laboratory, Org. A021S, Bldg. 252, 3251 Hanover St., Palo Alto, CA 94304, USA; e-mail: [email protected] ABSTRACT The geometric arrangement of planet and moon orbits into a regularly spaced pattern of distances is the result of a self-organizing system. The positive feedback mechanism that operates a self-organizing system is accomplished by harmonic orbit resonances, leading to long-term stable planet and moon orbits in solar or stellar systems. The distance pattern of planets was originally described by the empirical Titius-Bode law, and by a generalized version with a constant geometric progression factor (corresponding to logarithmic spacing). We find that the orbital periods Ti and planet distances Ri from the Sun are not consistent with logarithmic spacing, 2/3 2/3 but rather follow the quantized scaling (Ri+1/Ri) = (Ti+1/Ti) = (Hi+1/Hi) , where the harmonic ratios are given by five dominant resonances, namely (Hi+1 : Hi)=(3:2), (5 : 3), (2 : 1), (5 : 2), (3 : 1). We find that the orbital period ratios tend to follow the quantized harmonic ratios in increasing order. We apply this harmonic orbit resonance model to the planets and moons in our solar system, and to the exo-planets of 55 Cnc and HD 10180 planetary systems. The model allows us a prediction of missing planets in each planetary system, based on the quasi- regular self-organizing pattern of harmonic orbit resonance zones. We predict 7 (and 4) missing exo-planets around the star 55 Cnc (and HD 10180). -
1. Introduction
1. INTRODUCTION 1.1 SUBJECT Three great mathematicians dominate the history of lunar theory in the middle of the 18th century: Leonhard Euler, Alexis Clairaut, and Jean le Rond d’Alembert. Each of them made a lasting contribution to the theory of celestial mechanics and their results had a broader impact than on lunar theory alone. To name but a few examples, Euler codified the trigonometric functions and pioneered the method of variation of orbital constants; Clairaut solved the arduous problem of the motion of the lunar apogee, thereby dealing a decisive blow to the sceptics of Newton’s law of gravitation; and d’Alembert worked out an accurate theory of precession and nutation. But during the second half of the 18th century, the most accurate tables of lunar motion were those of Tobias Mayer; not because he was better at solving the differ- ential equations of motion, but because he was eager to handle large and conflicting data sets in what could nowadays be called a statistical way. He was a true pioneer in the ‘combination of observations’, which comprises the handling of observational data in order to infer from them certain quantitative aspects of the physical reality. His tables of the moon’s motion had an important application in the determination of geographical longitude at sea, by the so-called method of lunar distances. What is known of Mayer’s work on lunar motion? Alfred Gautier, the 19th century astronomer, included a brief analysis of the contents of Mayer’s Theoria Lunae in his essay on the history of the three-body problem.1 Delambre, although full of admiration for Mayer, dedicated only a few lines to it.2 The 20th century research by Eric Forbes, culminating in a biography of Mayer, has brought about something of a Mayer revival.3 Forbes has constructed a unifying picture of the man Mayer and his work, after thorough investigation of correspondence, unpublished treatises and memoirs, and published sources as well. -
The Astronomical Work of Carl Friedrich Gauss
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Elsevier - Publisher Connector HISTORIA MATHEMATICA 5 (1978), 167-181 THE ASTRONOMICALWORK OF CARL FRIEDRICH GAUSS(17774855) BY ERIC G, FORBES, UNIVERSITY OF EDINBURGH, EDINBURGH EH8 9JY This paper was presented on 3 June 1977 at the Royal Society of Canada's Gauss Symposium at the Ontario Science Centre in Toronto [lj. SUMMARIES Gauss's interest in astronomy dates from his student-days in Gattingen, and was stimulated by his reading of Franz Xavier von Zach's Monatliche Correspondenz... where he first read about Giuseppe Piazzi's discovery of the minor planet Ceres on 1 January 1801. He quickly produced a theory of orbital motion which enabled that faint star-like object to be rediscovered by von Zach and others after it emerged from the rays of the Sun. Von Zach continued to supply him with the observations of contemporary European astronomers from which he was able to improve his theory to such an extent that he could detect the effects of planetary perturbations in distorting the orbit from an elliptical form. To cope with the complexities which these introduced into the calculations of Ceres and more especially the other minor planet Pallas, discovered by Wilhelm Olbers in 1802, Gauss developed a new and more rigorous numerical approach by making use of his mathematical theory of interpolation and his method of least-squares analysis, which was embodied in his famous Theoria motus of 1809. His laborious researches on the theory of Pallas's motion, in whi::h he enlisted the help of several former students, provided the framework of a new mathematical formu- lation of the problem whose solution can now be easily effected thanks to modern computational techniques. -
A Pilot-Wave Gravity and the Titius-Bode Law
New Horizons in Mathematical Physics, Vol. 1, No. 3, December 2017 https://dx.doi.org/10.22606/nhmp.2017.13001 75 A Pilot-Wave Gravity and the Titius-Bode Law J.R. Croca1,2, P. Castro2, M. Gatta2,3, A. Cardoso2 and R. Moreira2 1University of Lisbon, Faculty of Sciences, Department of Physics 2Center of Philosophy of Sciences of the University of Lisbon 3CINAV and Escola Naval (Portuguese Naval Academy) Email: [email protected]; [email protected]; [email protected]; [email protected]; [email protected] Abstract. Since its initial proposal in 1766, Titius-Bode empirical law has remained a puzzling source of discomfort as it predicts the average distances from the planets to the Sun for no apparent reason. Using a framework analogous to de Broglie’s pilot wave theory and the self-organizing Principle of Eurhythmy, we claim that several main physical quantities describing the Solar System are quantified. Hence the Titius-Bode Law is a direct manifestation of gravitational pilot-waves at work in the Solar System. Keywords: Titius-Bode Law, Gravity, Pilot wave theory, planet-star interactions. 1 Titius-Bode Law History and Formulation The occurrence of simple numerical relations between observable quantities in natural phenomena has been a constant source of interest and even fascination, as has happened with the Pythagoreans. In some occasions such relations go beyond the purely mystical and lead to important scientific insights. Among many possible examples, one may recall de Broglie’s fundamental intuition that the occurrence of integer numbers in Bohr’s model, for the hydrogen atom, should have something to do with wave phenomena, for which that occurrence was well established and easily understood. -
Caput Medusae
john c. barentine ASTERISMS, SINGLE-SOURCE AND REBRANDS Uncharted Constellations Asterisms, Single-Source and Rebrands John C. Barentine Uncharted Constellations Asterisms, Single-Source and Rebrands 123 John C. Barentine TUCSON, AZ, USA SPRINGER PRAXIS BOOKS IN POPULAR ASTRONOMY Springer Praxis Books ISBN 978-3-319-27618-2 ISBN 978-3-319-27619-9 (eBook) DOI 10.1007/978-3-319-27619-9 Library of Congress Control Number: 2015958891 Springer Cham Heidelberg New York Dordrecht London © Springer International Publishing Switzerland 2016 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Cover illustration: “Lacerta, Cygnus, Lyra, Vulpecula and Anser”, plate 14 in Urania’s Mirror, a set of celestial cards accompanied by A familiar treatise on astronomy...byJehoshaphatAspin.London. -
Barry Lawrence Ruderman Antique Maps Inc
Barry Lawrence Ruderman Antique Maps Inc. 7407 La Jolla Boulevard www.raremaps.com (858) 551-8500 La Jolla, CA 92037 [email protected] Orion and Haase (Lepus the Rabbit) Stock#: 56255 Map Maker: Bode Date: 1805 Place: Berlin Color: Hand Colored Condition: VG+ Size: 9 x 7 inches Price: SOLD Description: Striking star chart centered the constellations Orion and Lepus, published by Johann Elert Bode (1747-1826), in his Vorstellung der Gestirne auf XXXIV Tafeln, 1805. Shows the featured constellations in color with neighboring stars and constellations without color or in much lighter colors. Bode was born in Hamburg. His first publication was on the solar eclipse, August 5, 1766. This was followed by an elementary treatise on astronomy entitled Anleitung zur Kenntniss des gestirnten Himmels, the success of which led to his being summoned to Berlin in 1772 for the purpose of computing ephemerides on an improved plan. In 1774, Bode started the well-known Astronomisches Jahrbuch, a journal which ran to 51 yearly volumes. Bode became director of the Berlin Observatory in 1786, where he remained until 1825. There he published the Uranographia in 1801, a celestial atlas that aimed both at scientific accuracy in showing the positions of stars and other astronomical objects, as well as the artistic interpretation of the stellar constellation figures. The Uranographia marks the climax of an epoch of artistic representation of the constellations. Later atlases showed fewer and fewer elaborate figures until they were no longer printed on such tables. Bode also published a small star atlas, intended for astronomical amateurs ( Vorstellung der Gestirne). -
The Milky Way the Milky Way's Neighbourhood
The Milky Way What Is The Milky Way Galaxy? The.Milky.Way.is.the.galaxy.we.live.in..It.contains.the.Sun.and.at.least.one.hundred.billion.other.stars..Some.modern. measurements.suggest.there.may.be.up.to.500.billion.stars.in.the.galaxy..The.Milky.Way.also.contains.more.than.a.billion. solar.masses’.worth.of.free-floating.clouds.of.interstellar.gas.sprinkled.with.dust,.and.several.hundred.star.clusters.that. contain.anywhere.from.a.few.hundred.to.a.few.million.stars.each. What Kind Of Galaxy Is The Milky Way? Figuring.out.the.shape.of.the.Milky.Way.is,.for.us,.somewhat.like.a.fish.trying.to.figure.out.the.shape.of.the.ocean.. Based.on.careful.observations.and.calculations,.though,.it.appears.that.the.Milky.Way.is.a.barred.spiral.galaxy,.probably. classified.as.a.SBb.or.SBc.on.the.Hubble.tuning.fork.diagram. Where Is The Milky Way In Our Universe’! The.Milky.Way.sits.on.the.outskirts.of.the.Virgo.supercluster..(The.centre.of.the.Virgo.cluster,.the.largest.concentrated. collection.of.matter.in.the.supercluster,.is.about.50.million.light-years.away.).In.a.larger.sense,.the.Milky.Way.is.at.the. centre.of.the.observable.universe..This.is.of.course.nothing.special,.since,.on.the.largest.size.scales,.every.point.in.space. is.expanding.away.from.every.other.point;.every.object.in.the.cosmos.is.at.the.centre.of.its.own.observable.universe.. Within The Milky Way Galaxy, Where Is Earth Located’? Earth.orbits.the.Sun,.which.is.situated.in.the.Orion.Arm,.one.of.the.Milky.Way’s.66.spiral.arms..(Even.though.the.spiral.