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Introduction to Astronomy from Darkness to Blazing Glory
Introduction to Astronomy From Darkness to Blazing Glory Published by JAS Educational Publications Copyright Pending 2010 JAS Educational Publications All rights reserved. Including the right of reproduction in whole or in part in any form. Second Edition Author: Jeffrey Wright Scott Photographs and Diagrams: Credit NASA, Jet Propulsion Laboratory, USGS, NOAA, Aames Research Center JAS Educational Publications 2601 Oakdale Road, H2 P.O. Box 197 Modesto California 95355 1-888-586-6252 Website: http://.Introastro.com Printing by Minuteman Press, Berkley, California ISBN 978-0-9827200-0-4 1 Introduction to Astronomy From Darkness to Blazing Glory The moon Titan is in the forefront with the moon Tethys behind it. These are two of many of Saturn’s moons Credit: Cassini Imaging Team, ISS, JPL, ESA, NASA 2 Introduction to Astronomy Contents in Brief Chapter 1: Astronomy Basics: Pages 1 – 6 Workbook Pages 1 - 2 Chapter 2: Time: Pages 7 - 10 Workbook Pages 3 - 4 Chapter 3: Solar System Overview: Pages 11 - 14 Workbook Pages 5 - 8 Chapter 4: Our Sun: Pages 15 - 20 Workbook Pages 9 - 16 Chapter 5: The Terrestrial Planets: Page 21 - 39 Workbook Pages 17 - 36 Mercury: Pages 22 - 23 Venus: Pages 24 - 25 Earth: Pages 25 - 34 Mars: Pages 34 - 39 Chapter 6: Outer, Dwarf and Exoplanets Pages: 41-54 Workbook Pages 37 - 48 Jupiter: Pages 41 - 42 Saturn: Pages 42 - 44 Uranus: Pages 44 - 45 Neptune: Pages 45 - 46 Dwarf Planets, Plutoids and Exoplanets: Pages 47 -54 3 Chapter 7: The Moons: Pages: 55 - 66 Workbook Pages 49 - 56 Chapter 8: Rocks and Ice: -
Habitabilidade No Sistema Solar
Jorge Martins Teixeira HABITABILIDADE NO SISTEMA SOLAR Departamento de Física e Astronomia. Faculdade de Ciências da Universidade do Porto. Ano de 2014 Prefácio O tema da existência de vida no sistema solar é extremamente interessante. Gente de todas as idades, formações escolares e profissões se questiona se estamos sós no Universo. E gente de todos os tempos. É um assunto inesgotável. Estar em cima deste planeta e ver aquelas pintinhas lá longe tão inacessíveis é sentir que estamos perante algo que nos ultrapassa completamente. Mas que é ao mesmo tempo extremamente fascinante. Isso mesmo tive oportunidade de constatar numas férias que passei no Alentejo quando estive presente no Andanças - basicamente uma série de pavilhões onde se aprende a dançar - pois quando me encontrava altas horas da noite a indicar aos meus colegas onde se encontrava a estrela polar, a posição da Via Láctea, e outros fenómenos astronómicos fui surpreendido por um grupo de umas dez pessoas, de todas as idades, que se apercebeu do que estava a fazer e propôs a realização de uma sessão de observação de astronomia naquele recinto. De pergunta a pergunta a olhar para o céu estrelado, os minutos passaram a mais de uma hora. Isto é, a juntar à dança propriamente dita não lhes parecia mal acrescentar as danças dos corpos celestes. Seria também interessante fazer uma pesquisa nos livros de divulgação científica quais aqueles que fazem da astronomia o seu principal tema. E dar o devido valor a estas matérias que têm sido um pouco subalternizadas no ensino por outras. E ir para o espaço é o nosso futuro. -
Bayesian Analysis of the Astrobiological Implications of Life's
Bayesian analysis of the astrobiological implications of life's early emergence on Earth David S. Spiegel ∗ y, Edwin L. Turner y z ∗Institute for Advanced Study, Princeton, NJ 08540,yDept. of Astrophysical Sciences, Princeton Univ., Princeton, NJ 08544, USA, and zInstitute for the Physics and Mathematics of the Universe, The Univ. of Tokyo, Kashiwa 227-8568, Japan Submitted to Proceedings of the National Academy of Sciences of the United States of America Life arose on Earth sometime in the first few hundred million years Any inferences about the probability of life arising (given after the young planet had cooled to the point that it could support the conditions present on the early Earth) must be informed water-based organisms on its surface. The early emergence of life by how long it took for the first living creatures to evolve. By on Earth has been taken as evidence that the probability of abiogen- definition, improbable events generally happen infrequently. esis is high, if starting from young-Earth-like conditions. We revisit It follows that the duration between events provides a metric this argument quantitatively in a Bayesian statistical framework. By (however imperfect) of the probability or rate of the events. constructing a simple model of the probability of abiogenesis, we calculate a Bayesian estimate of its posterior probability, given the The time-span between when Earth achieved pre-biotic condi- data that life emerged fairly early in Earth's history and that, billions tions suitable for abiogenesis plus generally habitable climatic of years later, curious creatures noted this fact and considered its conditions [5, 6, 7] and when life first arose, therefore, seems implications. -
Cometary Panspermia a Radical Theory of Life’S Cosmic Origin and Evolution …And Over 450 Articles, ~ 60 in Nature
35 books: Cosmic origins of life 1976-2020 Physical Sciences︱ Chandra Wickramasinghe Cometary panspermia A radical theory of life’s cosmic origin and evolution …And over 450 articles, ~ 60 in Nature he combined efforts of generations supporting panspermia continues to Prof Wickramasinghe argues that the seeds of all life (bacteria and viruses) Panspermia has been around may have arrived on Earth from space, and may indeed still be raining down some 100 years since the term of experts in multiple fields, accumulate (Wickramasinghe et al., 2018, to affect life on Earth today, a concept known as cometary panspermia. ‘primordial soup’, referring to Tincluding evolutionary biology, 2019; Steele et al., 2018). the primitive ocean of organic paleontology and geology, have painted material not-yet-assembled a fairly good, if far-from-complete, picture COMETARY PANSPERMIA – cultural conceptions of life dating back galactic wanderers are normal features have argued that these could not into living organisms, was first of how the first life on Earth progressed A SOLUTION? to the ideas of Aristotle, and that this of the cosmos. Comets are known to have been lofted from the Earth to a coined. The question of how from simple organisms to what we can The word ‘panspermia’ comes from the may be the source of some of the have significant water content as well height of 400km by any known process. life’s molecular building blocks see today. However, there is a crucial ancient Greek roots ‘sperma’ meaning more hostile resistance the idea of as organics, and their cores, kept warm Bacteria have also been found high in spontaneously assembled gap in mainstream understanding - seed, and ‘pan’, meaning all. -
Naming the Extrasolar Planets
Naming the extrasolar planets W. Lyra Max Planck Institute for Astronomy, K¨onigstuhl 17, 69177, Heidelberg, Germany [email protected] Abstract and OGLE-TR-182 b, which does not help educators convey the message that these planets are quite similar to Jupiter. Extrasolar planets are not named and are referred to only In stark contrast, the sentence“planet Apollo is a gas giant by their assigned scientific designation. The reason given like Jupiter” is heavily - yet invisibly - coated with Coper- by the IAU to not name the planets is that it is consid- nicanism. ered impractical as planets are expected to be common. I One reason given by the IAU for not considering naming advance some reasons as to why this logic is flawed, and sug- the extrasolar planets is that it is a task deemed impractical. gest names for the 403 extrasolar planet candidates known One source is quoted as having said “if planets are found to as of Oct 2009. The names follow a scheme of association occur very frequently in the Universe, a system of individual with the constellation that the host star pertains to, and names for planets might well rapidly be found equally im- therefore are mostly drawn from Roman-Greek mythology. practicable as it is for stars, as planet discoveries progress.” Other mythologies may also be used given that a suitable 1. This leads to a second argument. It is indeed impractical association is established. to name all stars. But some stars are named nonetheless. In fact, all other classes of astronomical bodies are named. -
Língua Espanhola
Questão 21 LÍNGUA ESPANHOLA Las palabras que rellenan correctamente las lagunas INSTRUÇÃO: Responder às questões 21 a 25 com entre las líneas 07 y 38 son, respectivamente, base no texto 1. A) mientras – al – paralelamente TEXTO 1 B) aun – a – esporádicamente 01 Un equipo de astrónomos ha detectado una 02 atmósfera alrededor de la super-Tierra GJ 1132b. El C) sin embargo – a lo – inexorablemente 03 planeta gira alrededor de la estrella enana roja GJ 04 1132 en la constelación de Vela Sur, a una distancia D) aún – a lo – totalmente 05 de 39 años luz de nosotros. Este hallazgo marca la 06 primera detección de una atmósfera alrededor de un E) todavía – al – simultáneamente 07 planeta muy parecido a la Tierra que ______ cuenta _____________________________________________ 08 con atmósfera; un paso significativo hacia la detección 09 de vida en un exoplaneta. Questão 22 10 Los expertos del Instituto Max Planck de Astronomía 11 (Alemania), en conjunto con otros investigadores, La única pregunta que encuentra respuesta en el 12 emplearon el telescopio del Observatorio Austral texto es 13 Europeo (ESO) / MPG de 2,2m en Chile para tomar 14 imágenes de la estrella anfitriona del planeta y A) ¿Cuándo se descubrió el planeta GJ 1132b? 15 midieron la ligera disminución del brillo a medida que 16 el planeta y su atmósfera absorbían parte de la luz B) ¿Cuántos países están involucrados en las 17 de la estrella, al pasar directamente delante de su observaciones? 18 estrella anfitriona. 19 Es la primera vez que se detecta una atmósfera 20 alrededor de un planeta tan parecido ______ nuestro, C) ¿Cuál es el próximo paso para los científicos con 21 pues tiene 1,6 masas terrestres y su radio es de 1,4 relación a la atmósfera descubierta? 22 radios el de la Tierra. -
Searching for Extraterrestrial Intelligence
THE FRONTIERS COLLEctION THE FRONTIERS COLLEctION Series Editors: A.C. Elitzur L. Mersini-Houghton M. Schlosshauer M.P. Silverman J. Tuszynski R. Vaas H.D. Zeh The books in this collection are devoted to challenging and open problems at the forefront of modern science, including related philosophical debates. In contrast to typical research monographs, however, they strive to present their topics in a manner accessible also to scientifically literate non-specialists wishing to gain insight into the deeper implications and fascinating questions involved. Taken as a whole, the series reflects the need for a fundamental and interdisciplinary approach to modern science. Furthermore, it is intended to encourage active scientists in all areas to ponder over important and perhaps controversial issues beyond their own speciality. Extending from quantum physics and relativity to entropy, consciousness and complex systems – the Frontiers Collection will inspire readers to push back the frontiers of their own knowledge. Other Recent Titles Weak Links Stabilizers of Complex Systems from Proteins to Social Networks By P. Csermely The Biological Evolution of Religious Mind and Behaviour Edited by E. Voland and W. Schiefenhövel Particle Metaphysics A Critical Account of Subatomic Reality By B. Falkenburg The Physical Basis of the Direction of Time By H.D. Zeh Mindful Universe Quantum Mechanics and the Participating Observer By H. Stapp Decoherence and the Quantum-To-Classical Transition By M. Schlosshauer The Nonlinear Universe Chaos, Emergence, Life By A. Scott Symmetry Rules How Science and Nature are Founded on Symmetry By J. Rosen Quantum Superposition Counterintuitive Consequences of Coherence, Entanglement, and Interference By M.P. -
Cosmological Aspects of Planetary Habitability
Cosmological aspects of planetary habitability Yu. A. Shchekinov Department of Space Physics, SFU, Rostov on Don, Russia [email protected] M. Safonova, J. Murthy Indian Institute of Astrophysics, Bangalore, India [email protected], [email protected] ABSTRACT The habitable zone (HZ) is defined as the region around a star where a planet can support liquid water on its surface, which, together with an oxygen atmo- sphere, is presumed to be necessary (and sufficient) to develop and sustain life on the planet. Currently, about twenty potentially habitable planets are listed. The most intriguing question driving all these studies is whether planets within habitable zones host extraterrestrial life. It is implicitly assumed that a planet in the habitable zone bears biota. How- ever along with the two usual indicators of habitability, an oxygen atmosphere and liquid water on the surface, an additional one – the age — has to be taken into account when the question of the existence of life (or even a simple biota) on a planet is addressed. The importance of planetary age for the existence of life as we know it follows from the fact that the primary process, the photosynthesis, is endothermic with an activation energy higher than temperatures in habitable zones. Therefore on planets in habitable zones, due to variations in their albedo, orbits, diameters and other crucial parameters, the onset of photosynthesis may arXiv:1404.0641v1 [astro-ph.EP] 2 Apr 2014 take much longer time than the planetary age. Recently, several exoplanets orbiting Population II stars with ages of 12–13 Gyr were discovered. -
Arxiv:2005.14671V2 [Astro-Ph.EP] 30 Jun 2020 Tion Et Al
Draft version July 1, 2020 Typeset using LATEX twocolumn style in AASTeX62 The Gaia-Kepler Stellar Properties Catalog. II. Planet Radius Demographics as a Function of Stellar Mass and Age Travis A. Berger,1 Daniel Huber,1 Eric Gaidos,2 Jennifer L. van Saders,1 and Lauren M. Weiss1 1Institute for Astronomy, University of Hawai`i, 2680 Woodlawn Drive, Honolulu, HI 96822, USA 2Department of Earth Sciences, University of Hawai`i at M¯anoa, Honolulu, HI 96822, USA ABSTRACT Studies of exoplanet demographics require large samples and precise constraints on exoplanet host stars. Using the homogeneous Kepler stellar properties derived using Gaia Data Release 2 by Berger et al.(2020), we re-compute Kepler planet radii and incident fluxes and investigate their distributions with stellar mass and age. We measure the stellar mass dependence of the planet radius valley to +0:21 be d log Rp/d log M? = 0:26−0:16, consistent with the slope predicted by a planet mass dependence on stellar mass (0.24{0.35) and core-powered mass-loss (0.33). We also find first evidence of a stellar age dependence of the planet populations straddling the radius valley. Specifically, we determine that the fraction of super-Earths (1{1.8 R⊕) to sub-Neptunes (1.8{3.5 R⊕) increases from 0.61 ± 0.09 at young ages (< 1 Gyr) to 1.00 ± 0.10 at old ages (> 1 Gyr), consistent with the prediction by core-powered mass- loss that the mechanism shaping the radius valley operates over Gyr timescales. Additionally, we find a tentative decrease in the radii of relatively cool (Fp < 150 F⊕) sub-Neptunes over Gyr timescales, which suggests that these planets may possess H/He envelopes instead of higher mean molecular weight atmospheres. -
Appendix Relations with Alien Intelligences – the Scientific Basis of Metalaw1
Appendix Relations with Alien Intelligences – The Scientific Basis of Metalaw1 Ernst Fasan DK 340.114:341.229:2:133 1 The appendix was previously published by Berlin Verlag Arno Spitz in 1970. © Springer International Publishing Switzerland 2016 181 P.M. Sterns, L.I. Tennen (eds.), Private Law, Public Law, Metalaw and Public Policy in Space, Space Regulations Library 8, DOI 10.1007/978-3-319-27087-6 Contents Foreword by Wernher von Braun ����������������������������������������������������������������� 185 Introduction ����������������������������������������������������������������������������������������������������� 187 I: The Possibility of Encountering Nonhuman Intelligent Beings �������������� 189 Opinions in Ancient Literature ��������������������������������������������������������������������� 189 The Results of Modern Science �������������������������������������������������������������� 191 II: The Physical Nature of Extraterrestrial Beings �������������������������������������� 205 The Necessary Characteristics ��������������������������������������������������������������������� 205 Origin and Development of Protoplasmic Life ��������������������������������������� 209 Intelligent Machines – The Question of Robots �������������������������������������� 210 III: The Concept, Term, and Literature of Metalaw ����������������������������������� 213 Selection and Definition of the Term ����������������������������������������������������������� 213 A Survey of Literature ����������������������������������������������������������������������������� -
Monitor 1St Quarter 2019
THE ACADEMY MONITOR VOLUME 13 ISSUE 1 1 GREETINGS FROM THE GREAT HALLS OF LEARNING, S STARFLEET ACADEMY!!! T Q U A R IN THIS ISSUE: T Commandant Article 2 E Academy Information 3-5 Around the Academy R Outstanding Students 6 Academic Excellence Awards 7 Graduates 8-13 Academy Degree Program 14&15 2 Bridge Officers Cert Awards 16 0 Vessel Readiness Cert Program 17 Boothby 18-22 1 Miscellaneous 23-34 Editor Comments 35 9 FROM THE ACTING COMMANDANT The first Quarter of 2019 was insanely busy, as Academy continued to recover from the passing of Glen Diebold on September 26, 2018. We also migrated Academy from its separate server into SFI.org, so that the STARFLEET branding could be applied to Academy, and to eliminate the costs of an extra domain and web hosting. We had to close Glen’s unfinished projects that he left behind, and audit and retire those colleges that were not performing at minimum standards. We were not lacking in volunteers to direct those that were left. Survival Studies (COSS), a favorite among many students, was taken over by myself, the author of the first version of the college. The COSS has gone through a major rewrite and reformat. Long exams were divided into 25-point multiple choice or True and False exams. Three of the four schools are reopened, and the fourth will be open soon, with more exams to be added. Wherever an exam was split into 2 or more exams, the existing graduates was copied over with their grades and completion dates. -
Mètodes De Detecció I Anàlisi D'exoplanetes
MÈTODES DE DETECCIÓ I ANÀLISI D’EXOPLANETES Rubén Soussé Villa 2n de Batxillerat Tutora: Dolors Romero IES XXV Olimpíada 13/1/2011 Mètodes de detecció i anàlisi d’exoplanetes . Índex - Introducció ............................................................................................. 5 [ Marc Teòric ] 1. L’Univers ............................................................................................... 6 1.1 Les estrelles .................................................................................. 6 1.1.1 Vida de les estrelles .............................................................. 7 1.1.2 Classes espectrals .................................................................9 1.1.3 Magnitud ........................................................................... 9 1.2 Sistemes planetaris: El Sistema Solar .............................................. 10 1.2.1 Formació ......................................................................... 11 1.2.2 Planetes .......................................................................... 13 2. Planetes extrasolars ............................................................................ 19 2.1 Denominació .............................................................................. 19 2.2 Història dels exoplanetes .............................................................. 20 2.3 Mètodes per detectar-los i saber-ne les característiques ..................... 26 2.3.1 Oscil·lació Doppler ........................................................... 27 2.3.2 Trànsits