U s h e r Oli Usher It’s now almost a quarter of a century since • Oli is a London-based science writer, who Hubble lifted off from the launch pad at the C works as the communications manager for h Kennedy Space Center. Despite a rocky start, r the Faculty of Mathematical and Physical is the achievements of this telescope have t Sciences at University College London. He e surpassed every expectation. Designed with large images and distraction-free layouts to increase the impact of n is responsible for bringing the work of the s e university’s scientists to the public, covering Hubble’s imagery, this book gives the reader a guided tour of the cosmos through the n Before Hubble, astronomers had never seen the fi elds of astrophysics, space science and eyes of the Hubble Space Telescope. Before Hubble was launched in 1990, no exoplanet an exoplanet, did not know the age of the planetary sciences among others. universe, and had never observed a galaxy had ever been observed, dark energy was unknown, the age of the universe was a from the infancy of the cosmos. mystery, and the most distant objects observed were just halfway back in time to the T Lars Lindberg Christensen Big Bang. Hubble has been the centerpiece in a revolution in astronomy, as well as Hubble has transformed our knowledge of the h Lars is an award-winning science universe to an extent that arguably no other giving the public a visceral connection to the Universe through its stunning images. The e communication specialist who heads the scientifi c facility can match. images that have been selected here explore key themes in recent astronomy, including U European Southern Observatory’s education and Public Outreach Department. He obtained planetary science, cosmology and stellar evolution, explaining Hubble’s contributions n Two decades on, Hubble is producing its best his Master’s degree in physics and astronomy to our understanding of the universe. Hubble’s unique images – some never published iv science. On average two new studies based from the University of Copenhagen, Denmark, e on Hubble observations come out every day. before – are presented together with a mix of cutting-edge science that highlights the key Lars is Press Offi cer for the International r discoveries of the past few years and how they fi t into Hubble’s growing list of scientifi c s Astronomical Union (IAU), and director of two More than two decades after launch, Hubble e astronomy documentaries. achievements. It is an unforgettable view of our amazing universe. remains the gold standard for optical T astronomy, confounding the critics and the h skeptics who branded the telescope a failure www.spacetelescope.org r after launch. o u Hubble’s discoveries and Hubble’s pictures g show no sign of drying up any time soon. Join h the European Hubble team in a celebration of t Hubble’s successes. h e E y e The Universe Through s o f H the Eyes of Hubble u b b l e Oli Usher & Lars Lindberg Christensen 9 783319 027227 Messier 15 Messier 15 is a globular cluster – a spherical conglomeration of old stars that formed together from the same cloud of gas, found in the outer reaches of the Milky Way. It is one of the densest globulars known, and also the fi rst globular cluster known to harbor a planetary nebula. The planetary nebula, called Pease 1, can be seen in this image as a small blue blob to the left of the globular’s core. The Universe Through the Eyes of Hubble Oli Usher & Lars Lindberg Christensen 1 The Universe Through the Eyes of All books published by Springer are carefully produced. Nevertheless, authors, Hubble editors, and publisher do not warrant the information contained in these books, including this book, to be free of errors. Readers are advised to keep in mind that statements, data, illustrations, procedural details or other items may inadvertently be inaccurate. The Authors ISBN: 978-3-319-02722-7 Oli Usher e-ISBN: 978-3-319-02723-4 Lars Lindberg Christensen ESO & ESA/Hubble Garching bei München, Germany Library of Congress Control Number: 2009930652 English language edition: Copyright © Springer International Publishing AG 2014 Design and Layout All rights reserved. This work may not be translated or copied in whole or in part Andre Roquette & without the written permission of the publisher (Springer International Publishing Edward Challis AG, Gewerbestrasse 11, 6330 Cham, Switzerland) except for brief excerpts in ESO & ESA/Hubble connection with reviews or scholarly analysis. Use in connection with any form Garching bei München, Germany of information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed is forbidden. The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject to proprietary rights. Printed on acid-free paper. 9 8 7 6 5 4 3 2 1 springer.com Cover: Composite image of Hubble observing the Back: The Sombrero Galaxy Tarantula Nebula The Sombrero Galaxy’s hallmark is a brilliant white, This star-forming region lies in the Large Magellanic bulbous core encircled by the thick dust lanes Cloud, a small galaxy which neighbors the Milky comprising the spiral structure of the galaxy. As seen Way. It is home to many extreme conditions including from Earth, the galaxy is tilted nearly edge-on. This supernova remnants and the heaviest star ever found. brilliant galaxy was named the Sombrero because The Tarantula Nebula is the most luminous nebula of of its resemblance to the broad rim and high-topped its type in the local universe. Mexican hat. 2 Oli Usher For Sarah, who reminded me that deadlines and books are both things to be treated with respect. Lars Lindberg Christensen For the unsung heroes from NASA and ESA who made Hubble a success. 3 Table of contents Galaxy Cluster Abell 1703 Abell 1703 is composed of over one hundred different galaxies that act as a powerful cosmic telescope, or gravitational lens. The gravitational lens produced by the massive galaxy cluster in the foreground (the yellow and mostly elliptical galaxies scattered across the image) bends the light rays in a way that can stretch the images and so amplify the brightness of the light rays from more distant galaxies. In the process it distorts their shapes and produces multiple banana-shaped images of the original galaxies. 4 Foreword 6 Preface 8 1 Origins 10 2 Spaceship Hubble 20 3 Hubble Vision 28 4 Planets 38 5 Stars & Nebulae 54 6 Galaxies 84 7 Black Holes 110 8 The Dark Cosmos 126 9 Optical Illusions 144 10 Hubble’s Future 154 A1 Hubble Timeline 164 A2 Hubble’s Top Science Accomplishments 166 A3 Other Books about Hubble 167 Image Credits 168 Index 171 The Authors 174 5 Foreword It’s now almost a quarter of a century since Over the years, Hubble has become deeply At the hub of all this activity is the Space Hubble lifted off from the launch pad at the embedded in popular culture, with some of Telescope Science Institute in Baltimore Kennedy Space Center. Despite a rocky the telescope’s most famous pictures now in the USA and, until recently, the Space start, the achievements of this telescope widely recognized, appearing on TV, album Telescope–European Coordinating Facility have surpassed every expectation. covers, newspapers and computer games. in Munich, Germany. Over the years, the This is a testament both to the beauty of staff from NASA and the European Space Before Hubble, astronomers had never seen Hubble’s pictures and the fascinating sci- Agency (ESA) at these two institutions have an exoplanet, did not know the age of the ence behind them. played a huge role in pushing forward sci- universe, and had never observed a galaxy ence, and in bringing Hubble’s discoveries from the infancy of the cosmos. Two decades on, Hubble is producing its to the general public. best science. On average two new studies Hubble has transformed our knowledge of based on Hubble observations come out More than two decades after launch, Hubble the universe to an extent that arguably no every day. remains the gold standard for optical other scientific facility can match. astronomy, confounding the critics and the Observing with Hubble is a very competi- skeptics who branded the telescope a failure And it is still going strong! New cameras tive process for astronomers. Each year the after launch. and spectrographs were installed during observing time is massively oversubscribed, the space shuttle’s final visit to Hubble in and only the very best scientific projects Hubble’s discoveries and Hubble’s pictures 2009, leaving the telescope at the cutting have any chance at all of getting off the show no sign of drying up any time soon. edge of technology. And as the observatory ground. Around the world, astronomers matures, it is now delivering sharper, richer, compete for time on Hubble knowing that, Long may it continue to be so. and more remarkable images than at any for many types of astronomy, there is no time in its history. other observatory anywhere which can Antonella Nota outperform it. ESA Hubble Project Scientist & Mission Manager Space Telescope Science Institute, August 2013 NGC 5189 This striking image shows the planetary nebula NGC 5189. Its shape is reminiscent of a lawn sprinkler, with matter being expelled from the central star, which is wobbling as it rotates. 6