Stephen Hawking's Universe. Teacher's Guide. INSTITUTION Thirteen WNET, New York, NY.; Public Broadcasting Service, Washington, DC

Total Page:16

File Type:pdf, Size:1020Kb

Stephen Hawking's Universe. Teacher's Guide. INSTITUTION Thirteen WNET, New York, NY.; Public Broadcasting Service, Washington, DC DOCUMENT RESUME ED 460 839 SE 062 663 AUTHOR Thompson, Malcolm H.; Rameau, Jonathan D. TITLE Stephen Hawking's Universe. Teacher's Guide. INSTITUTION Thirteen WNET, New York, NY.; Public Broadcasting Service, Washington, DC. SPONS AGENCY Alfred P. Sloan Foundation, New York, NY.; Arthur Vining Davis Foundations, Miami, FL.; Corporation for Public Broadcasting, Washington, DC. PUB DATE 1997-00-00 NOTE 13p.; Also made possible by AMGEN. "Stephen Hawking's Universe" is a Thirteen/WNET/Uden Associates/David Filkin Enterprises coproduction with BBC-TV. Videotape not available from ERIC. AVAILABLE FROM Educational Publishing, Thirteen-WNET, 356 W. 58th Street, New York, NY 10019. Tel: 212-560-2888; Web site: http://www.wnet.org; Web Site: http://www.pbs.org. For full text: http://www.pbs.org/wnet/hawking/tguide.pdf. PUB TYPE Guides Classroom Teacher (052) EDRS PRICE MF01/PC01 Plus Postage. DESCRIPTORS Astronomy; Earth Science; Educational Television; Higher Education; *Matter; Nuclear Physics; Physics; Science Activities; Science Education; *Scientific Concepts; Scientific Principles; Secondary Education; Solar System; Space Exploration; *Space Sciences; *Stars; Teaching Guides IDENTIFIERS Big Bang Theory; Black Holes; *Cosmology; *Hawking (Stephen) ABSTRACT This program guide is meant to help teachers assist ,their students in viewing the six-part pubic television series, "Stephen Hawking's Universe." The guide features program summaries that give background information and brief synopses of the programs; previewing activities that familiarize students with the subject; vocabulary that gives definitions of the terms used in each program; postviewing activities that require students to use mathematics, research, and writing skills to examine issues and ideas discussed in the program; biographies of important figures in the history of cosmology; and Web sites on related topics. The first program in this series, "Seeing is Believing," shows the radical revisions that have taken place in cosmology over the last two thousand years. The second, "The Big Bang," describes the controversies surrounding the big bang theory. The third, "Cosmic Alchemy," examines theories concerning the evolution of matter. The fourth, "On the Dark Side," views the role that cold, dark matter plays in the universe. The fifth, "Black Holes and Beyond," discusses the enigmatic objects that result from a star's catastrophic gravitational collapse. The final program, "An Answer to Everything," examines scientists' attempts to develop a complete theory of how the universe works. (WRM) Reproductions supplied by EDRS are the best that can be made from the original document. ("5") 00 71- C2I s el en a_Lin: ilk . .14 06 IP - - I / ss _OP : : it '!5 , rr 416 . rt. U.S. DEPARTMENT OF EDUCATION attics of Educational Research and Improvement EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC) Thdocument has been reproduced as received from the person or organization originating it. O Minor changes have been made to improve reproduction quality. Points of view or opinions stated in this document do not necessarily represent official OERI position or policy. 4. s s .411. 01,' 4 , re Stephen Hawking's Universeand this guide are made possible by: Alfred P Sloan Foundation The Arthur Vining Davis Foundations The Corporation for Public Broadcasting Public television stations AMGEN 4A4 . -I _ Acknowledgments AMGEN This guide was produced by Mittin.wnet .11 Educational Resources Center Ruth Ann Burns, Director I I' 0', /1 s , , I ' II' 0; .1 Project Director:Robert A.Miller Supervising Editor:David Reisman, Ed.D. I I' II I'I I/I ' I /' I I Design/Art Direction:vanOs I" I I' I I I. .- *Graphics:JustM Malko Writers:Malcolm It Thompson I /': 1, II I' I II Jonathan D. Rameau : " Photo Researcher:Christina L. Draper I I 'I'/IIII/ 1'1 I / /I cop,:Editor and Proofreader: I I': "I II I I I' Shanbon Rothenberger 1 / 'I I I I : II :I I I' I II"I ' II 1 II', I'I I I 'I I' Idviser:Roe Gould, Education Analyst. : Smithsonian Astrophysical Observatory I/ II /' 1"," III/ S I' / II I Stephen Hawking's Universeis a III I II/ l 1 I I 11 / 1 II I I: ThirteenAVNET/Uden Associates/David Filkin 1 I : 1I" I/ I 1/I I I /I Enterprises coproduction in association I I" with BBC-Tv. II I I, I Ia I I II I "I I'IIII II A 1 1 ,/ I: / I: I , 1 II /I " ' / A II Stephen Hawking's Universe /I" I I 51' I:I " I I/ I I 'I II and this guide are made possible bv: , Alfred R Sloan Foundation ' , I The Arthur Vining Davis Foundations // S I' v II" S I '1 'the Corporation for Public Broadcasting / / " SI , Public television stations AMGEN Copyright © 1997 ThirteenAVNET ..111..._ Ordering Information Stcpben Hawkingls Universeis available on videocassette from PBS I I ome Video. To order, call 1-800-645-4727. To purchase for educational use, ! call 1-800-424-7963. ' II I . A companion bookVephen Hawking's Universe: The Casinos Evplained 41 t as) ?si r 1 3 be David Filkin, the series producer and i:I 2 oi if, a fellow student of I lawking at Oxford, is availabk!at bookstores for $30. flit Il I '.1i IV '01111.4 4)10 Published bv,Basic Books. Mil e- r r l )8)) (ut..t N11)1, 11111) r 3 .11 ).;1(11 )0e,till r.11.),))11,ryN o) 1 10 Videotaping Rights mio r r Off-air taping rights ofStephen Hawking:s -( t o) I 1 est ,.) N r- r 1_ 7 Universeare available to educators for One year folltiwing each broadcast release. ai ,111. HI httio iolu, introduction What is our place in the universe? What existed at the beginningg How to Use This Guide of space and time? Where did the universe come from and g This teacher's guide offers the following components: where is it headed? ? Program summaries that give background information and ? brief synopses of the programs; Throughout history, imaginative mathematicians and scientists ; Previewing activities that familiarize students with the subject; have sought the answers to these fundamental questions. Copernicus, Galileo, Newton, Einstein, Hubble, and others used;Vocabulary that pies definitions of terms used in each pro- direct observation, reasoning, applied mathematics, and new ? gram; technologies to overturn ideas about cosmology that were once ? Postviewing activities that correspond to the program viewed, deemed fundamental truths. Their breakthroughs reshaped sci- ? and require students to use mathematics, research and writ- ? ence's understanding of the nature and structure of the uni- 9 ing skills to examine issues and ideas discussed in Stephen verse. Their work, and that of other important cosmologists, Hawking's Universe; not only provided new explanations of the universe, but also ; Biographies of important figures in the history of cosmology; raised seemingly paradoxical questions. Did the vast variety and; and mass of matter that make up the cosmos evolve from nothing but energy? If so, where did the energy that created all of the g Web sites on related topics. matter in the universe come from? Please Note: Each page in this guide can be photocopied and The history of cosmology is a detective story in which each dis- distributed to students before viewing a program, or can be covery leads to even more puzzles. Yet each step brings scien- used as background information for developing lessons. Please tists closer to cosmology's ultimate goal a single theory that tailor the use of these materials to meet your classroom needs. takes into account all the forces shaping the universe. Stephen Hawking's Universe can be used in both mathematics Stephen Hawking's Universe is a six-part public television and science classes. We encourage you to share these materials series that invites viewers to take part in this voyage of discov- with your colleagues. 9 ery. Hosted by renowned Cambridge University mathematics professor Stephen Hawking, the program features noted astronomers, mathematicians, cosmologists, and physicists who provide an overview of the history of cosmology and the con- temporary challenges faced by astronomers. contents The first program in Stephen Hawking's Universe, "Seeing is Believing," shows the radical revisions that have taken place in cosmology in the last two thousand years. The second, "The "Seeing is Believing" 2 Big Bang," describes the controversies surrounding the big ) 0 0 0 0 0 0 0 0 0bang theory. The third, "Cosmic Alchemy," examines theories "The Big Bang" concerning the evolution of matter. The fourth, "On the Dark Side," looks at the role that cold, dark matter plays in the uni- "Cosmic Alchemy" 4 verse. The fifth, "Black Holes and Beyond," discusses the enig- matic objects that result from a star's catastrophic gravitational collapse. The final program, "An Answer to Everything," exam- "On the Dark Side" 5 ines scientists' attempts to develop a complete theory of how the universe works. "Black Holes and Beyond" 6 "An Answer to Everything" 7 Biographies 8 4 seein is believing 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 <) Vocabulary Activity a universe:the totali01 of all things. cf) Eratosthenes (276-194 BO measured the circumference of the 7.1 geocentric universe:an earth-centered model of the universe. earth using an ingenious technique. You can use this technique heliocentric (adverse:a sun-centered model of the universe. 0 today with modern data. 1) On a piece of lined paper I>Program Summary draw two intersecting lines.
Recommended publications
  • The Big Bang: New Light on an Old Theory
    Physics The Big Bang: New light on an old theory This lesson explores the evidence for the Big Bang theory of the origin of the Universe. In it, you will learn about the following: • Using the electromagnetic spectrum (EMS) to define radiation. • The Big Bang origin of the Universe theory. • What is the cosmic microwave background and how does this support the Big Bang theory? • Universe or Multiverse? Get ready for extragalactic time travel as we squeeze and bend our way through this space-time lesson. This is a print version of an interactive online lesson. To sign up for the real thing or for curriculum details about the lesson go to www.cosmosforschools.com Introduction: The Big Bang (P1) Scientists say they have just made a discovery that will help explain how our Universe began. If they are right, it could be the biggest, most exciting event in physics ever. Looking through a telescope into the clear skies over the South Pole, scientists spotted what they say is evidence of gravitational waves, or ripples in space-time, from the split second after the birth of the Universe – what scientists call the Big Bang. What’s got everyone so excited by this is that Albert Einstein predicted the existence of gravitational waves when he described how space and time were related and could be bent by huge forces of gravity. What the scientists at the South Pole think they saw was not gravitational waves – they would be invisible – but the effect of the waves on the light left over from the Big Bang.
    [Show full text]
  • Intelligent Design: Is It Really Worth It?
    Leaven Volume 17 Issue 2 Theology and Science Article 6 1-1-2009 Intelligent Design: Is It Really Worth It? Chris Doran [email protected] Follow this and additional works at: https://digitalcommons.pepperdine.edu/leaven Part of the Biblical Studies Commons, Christianity Commons, and the Religious Thought, Theology and Philosophy of Religion Commons Recommended Citation Doran, Chris (2009) "Intelligent Design: Is It Really Worth It?," Leaven: Vol. 17 : Iss. 2 , Article 6. Available at: https://digitalcommons.pepperdine.edu/leaven/vol17/iss2/6 This Article is brought to you for free and open access by the Religion at Pepperdine Digital Commons. It has been accepted for inclusion in Leaven by an authorized editor of Pepperdine Digital Commons. For more information, please contact [email protected], [email protected], [email protected]. Doran: Intelligent Design: Is It Really Worth It? Intelligent Design: Is It Really Worth It? CHRIS DORAN imaginethatwe have all had occasion to look up into the sky on a clear night, gaze at the countless stars, and think about how small we are in comparison to the enormity of the universe. For everyone except Ithe most strident atheist (although I suspect that even s/he has at one point considered the same feeling), staring into space can be a stark reminder that the universe is much grander than we could ever imagine, which may cause us to contemplate who or what might have put this universe together. For believers, looking up at tJotestars often puts us into the same spirit of worship that must have filled the psalmist when he wrote, "The heavens declare the glory of God; the skies proclaim the work of his hands" (Psalms 19.1).
    [Show full text]
  • Throughout the Universe, Galaxies Are Rushing Away from Us – and from Each Other – at Tremendously High Speeds
    Our Universe Began with a Bang Throughout the Universe, galaxies are rushing away from us – and from each other – at tremendously high speeds. This fact tells us that the Universe is expanding over time. Edwin Hubble (after whom the Hubble Space Telescope was named) first measured the expansion in 1929. Observatories of the Carnegie Institution of Washington Edwin Hubble This posed a big question. If we could run the cosmic movie backward in time, would everything in the Universe be crammed together in a blazing fireball – the starting point of Edwin Hubble & Proceedings of The National Academy of Sciences Hubble’s famous diagram showing the the Big Bang? A lot of scientific distance versus velocity of the galaxies he debate and many new theories observed. The farther away the galaxies, the faster they are moving, showing that the followed Hubble’s discovery. Universe is expanding. Among those in the front lines of the debate were physicists Ralph Alpher and Robert Herman. In 1948 they predicted that an afterglow of this fireball should still exist, though at a much lower temperature than at the time of the Big Bang. Here’s why: As the Universe Fun Fact: expands, the waves of heat About radiation from the Big Bang are 1% of the stretched out, and cool from “snow” you see visible energy to infrared and on broadcast TV then to microwave wavelengths. is caused by the Microwaves are just short- cosmic microwave wavelength radio waves, the same background. form of energy used in microwave ovens. The prediction of an afterglow could be tested! Scientists began building instruments to detect this “cosmic microwave background”, or CMB.
    [Show full text]
  • David Kirkby University of California, Irvine, USA 4 August 2020 Expanding Universe
    COSMOLOGY IN THE 2020S David Kirkby University of California, Irvine, USA 4 August 2020 Expanding Universe... 2 expansion history a(t |Ωm, ΩDE, …) 3 4 redshift 5 6 0.38Myr opaque universe last scatter 7 inflation opaque universe last scatter gravity waves? 8 CHIME SPT-3G DES 9 TCMB=2.7K, λ~2mm 10 CMB TCMB=2.7K, λ~2mm Galaxies 11 microwave projects: cosmic microwave background (primordial gravity waves, neutrinos, ...) CMB Galaxies optical & NIR projects: galaxy surveys (dark energy, neutrinos, ...) 12 CMB Galaxies telescope location: ground / above atmosphere 13 CMB Atacama desert, Chile CMB ground telescope location: Atacama desert / South Pole 14 Galaxies Galaxy survey instrument: spectrograph / imager 15 Dark Energy Spectroscopic Instrument (DESI) Vera Rubin Observatory 16 Dark Energy Spectroscopic Instrument (DESI) Vera Rubin Observatory 17 EXPANSION HISTORY VS STRUCTURE GROWTH Measurements of our cosmic expansion history constrain the parameters of an expanding homogenous universe: SN LSS , …) expansion historyDE m, Ω a(t |Ω CMB Small inhomogeneities are growing against this backdrop. Measurements of this structure growth provide complementary constraints. 18 Structure Growth 19 Redshift is not a perfect proxy for distance because of galaxy peculiar motions. Large-scale redshift-space distortions (RSD) trace large-scale matter fluctuations: signal! 20 Angles measured on the sky are also distorted by weak lensing (WL) as light is deflected by the same large-scale matter fluctuations: signal! Large-scale redshift-space distortions (RSD) trace large-scale matter fluctuations: signal! 21 CMB measures initial conditions of structure growth at z~1090: Temperature CMB photons also experience weak lensing! https://wiki.cosmos.esa.int/planck-legacy-archive/index.php/CMB_maps Polarization 22 CMB: INFLATION ERA SIGNATURES https://www.annualreviews.org/doi/abs/10.1146/annurev-astro-081915-023433 lensing E-modes lensing B-modes GW B-modes https://arxiv.org/abs/1907.04473 Lensing B modes already observed.
    [Show full text]
  • How the Universe Works an Attempt at Dealing with the Big Questions of Science and Philosophy in Light of 21’St Century Knowledge
    How the Universe Works An attempt at dealing with the big questions of science and philosophy in light of 21’st century knowledge. By Theodore A. Holden Copyright © 2015 Theodore A. Holden. All rights reserved. Other than as permitted under the Fair Use section of the United States copyright act of 1976, no part of this publication shall be reproduced or distributed in any form or by any means, or stored in a database or retrieval system without the prior written permission of the authors. Quoting of this work must be attributed to this book, and not in a manner which would indicate any sort of endorsement. No derivative works are permitted without express permission of the author. Reproduction of artwork contained in this book must be properly attributed to this book. Information, discussion, related links at: http://www.cosmosincollision.com/. ISBN # 978-0-9891787-3-0 Version 5/2/15 Contents Forward: Part I, Ancient Realities and Some Background Chapter 1. Gravity in prehistoric times. Animal and Human Sizes of Past Ages The Weightlifter and the Witch How Much Attenuation of Gravity was Needed to Account for Dinosaur Sizes? Sauropod Necks and the Problem of Torque Ancient Flying Creatures Ancient Humans and their Sizes Antediluvian Lifespans Chapter 2. The Fermi Paradox and the Realities of Interstellar Distances Chapter 3. Telepathy and Pre-Flood Language The Evidence for Telepathy in Today’s World Telepathy in the Ancient World Talking to the Animals… Chapter 4. The Mars Images Cities and villages Walls and fitted stones Mechanical junk and debris (A few samples) Gateways to Subterranean areas.
    [Show full text]
  • Saturday in the Park One for the Ladies?
    SUNDAY, OCTOBER 2, 2011 732-747-8060 $ TDN Home Page Click Here SATURDAY IN THE PARK ONE FOR THE LADIES? Yesterday=s card at Belmont Park was dubbed as With Sarafina (Fr) (Refuse To Bend {Ire}), Galikova ASuper Saturday,@ and it sure lived up to the billing (Fr) (Galileo {Ire}), Snow Fairy (Ire) (Intikhab) and despite wet conditions. Last Danedream (Ger) (Lomitas {GB}) in the line-up, today=s year=s champion juvenile renewal of the G1 Qatar Prix de l=Arc de Triomphe could Uncle Mo (Indian Charlie) be all about the females. Few have managed to overhaul proved to be one of the the colts in this feature, but the strengthening and brightest stars on the day, upgrading of Europe=s distaff program may be bringing a getting back on track against return to the era of Allez France, Ivanjica, Three Troikas older horses with a sharp (Fr), Detroit (Fr), Gold River (Fr), Akiyda (GB) and All three-length win over Along (Fr), who all triumphed here from 1974-1983. Jackson Bend (Hear No Evil) Sarafina represents the powerful axis of His Highness in the GII Kelso H. The The Aga Khan and Alain de Royer-Dupre, who Uncle Mo Repole Stable colorbearer has masterminded the success of the best filly in Adam Coglianese his sights set on the generations Zarkava (Ire) (Zamindar) here in 2008, and GI Breeders= Cup Classic some may suggest she is unlucky not to have already next. Fox Hill Farm=s Havre de Grace (Saint Liam) captured Europe=s feature. Hampered before rallying into apparently has plenty left in the tank after defeating the third behind Workforce (GB) (King=s Best) 12 months boys in the GI Woodward S.
    [Show full text]
  • A New Universe to Discover: a Guide to Careers in Astronomy
    A New Universe to Discover A Guide to Careers in Astronomy Published by The American Astronomical Society What are Astronomy and Astrophysics? Ever since Galileo first turned his new-fangled one-inch “spyglass” on the moon in 1609, the popular image of the astronomer has been someone who peers through a telescope at the night sky. But astronomers virtually never put eye to lens these days. The main source of astronomical data is still photons (particles of light) from space, but the tools used to gather and analyze them are now so sophisticated that it’s no longer necessary (or even possible, in most cases) for a human eye to look through them. But for all the high-tech gadgetry, the 21st-Century astronomer is still trying to answer the same fundamental questions that puzzled Galileo: How does the universe work, and where did it come from? Webster’s dictionary defines “astronomy” as “the science that deals with the material universe beyond the earth’s atmosphere.” This definition is broad enough to include great theoretical physicists like Isaac Newton, Albert Einstein, and Stephen Hawking as well as astronomers like Copernicus, Johanes Kepler, Fred Hoyle, Edwin Hubble, Carl Sagan, Vera Rubin, and Margaret Burbidge. In fact, the words “astronomy” and “astrophysics” are pretty much interchangeable these days. Whatever you call them, astronomers seek the answers to many fascinating and fundamental questions. Among them: *Is there life beyond earth? *How did the sun and the planets form? *How old are the stars? *What exactly are dark matter and dark energy? *How did the Universe begin, and how will it end? Astronomy is a physical (non-biological) science, like physics and chemistry.
    [Show full text]
  • What Happened Before the Big Bang?
    Quarks and the Cosmos ICHEP Public Lecture II Seoul, Korea 10 July 2018 Michael S. Turner Kavli Institute for Cosmological Physics University of Chicago 100 years of General Relativity 90 years of Big Bang 50 years of Hot Big Bang 40 years of Quarks & Cosmos deep connections between the very big & the very small 100 years of QM & atoms 50 years of the “Standard Model” The Universe is very big (billions and billions of everything) and often beyond the reach of our minds and instruments Big ideas and powerful instruments have enabled revolutionary progress a very big idea connections between quarks & the cosmos big telescopes on the ground Hawaii Chile and in space: Hubble, Spitzer, Chandra, and Fermi at the South Pole basics of our Universe • 100 billion galaxies • each lit with the light of 100 billion stars • carried away from each other by expanding space from a • big bang beginning 14 billion yrs ago Hubble (1925): nebulae are “island Universes” Universe comprised of billions of galaxies Hubble Deep Field: one ten millionth of the sky, 10,000 galaxies 100 billion galaxies in the observable Universe Universe is expanding and had a beginning … Hubble, 1929 Signature of big bang beginning Einstein: Big Bang = explosion of space with galaxies carried along The big questions circa 1978 just two numbers: H0 and q0 Allan Sandage, Hubble’s “student” H0: expansion rate (slope age) q0: deceleration (“droopiness” destiny) … tens of astronomers working (alone) to figure it all out Microwave echo of the big bang Hot MichaelBig S Turner Bang
    [Show full text]
  • Edwin Hubble (1889-1953) Measured Distance to Andromeda Galaxy (M31) • Noticed Individual Bright Stars in Andromeda
    The Resolution: Edwin Hubble (1889-1953) Measured Distance to Andromeda Galaxy (M31) • Noticed individual bright stars in Andromeda • Calculated the distance using the Period-Luminosity Relation for Cepheid Variable Stars The Resolution: Edwin Hubble (1889-1953) Measured Distance to Andromeda Galaxy (M31) • Noticed individual bright stars in Andromeda • Calculated the distance using the Period-Luminosity Relation for Cepheid Variable Stars 1. MEASURED magnitude & Period The Resolution: Edwin Hubble (1889-1953) Measured Distance to Andromeda Galaxy (M31) • Noticed individual bright stars in Andromeda • Calculated the distance using the Period-Luminosity Relation for Cepheid Variable Stars 1. MEASURED magnitude & Period 2. CALCULATED Luminosity The Resolution: Edwin Hubble (1889-1953) Measured Distance to Andromeda Galaxy (M31) • Noticed individual bright stars in Andromeda • Calculated the distance using the Period-Luminosity Relation for Cepheid Variable Stars 1. MEASURED magnitude & Period 2. CALCULATED Luminosity 3. CALCULATED Distance The Resolution: Edwin Hubble (1889-1953) Measured Distance to Andromeda Galaxy (M31) • Noticed individual bright stars in Andromeda • Calculated the distance using the Period-Luminosity Relation for Cepheid Variable Stars 1. MEASURED magnitude & Period 2. CALCULATED Luminosity 3. CALCULATED Distance • Result was MUCH farther than expected... • (2.3 Million Ly - well beyond Milky Way) Henrietta Leavitt & Period-Luminosity Relation Cepheid Variables: Bright stars whose Luminosity (energy output) varies every
    [Show full text]
  • Intensity Frontier
    Intensity Frontier 38th International Conference on High Energy Physics DOE-PI Meeting Session • Sheraton Grand Chicago August 5, 2016 Alan L. Stone Office of High Energy Physics Office of Science, U.S. Department of Energy Chicago, IL – ICHEP – Intensity Frontier PI Meeting Outline • HEP Overview • Budget • LBNF/DUNE • Intensity Frontier Overview • Comparative Review • Early Career • Workforce Development • Last Word • Q&A Aug 5, 2016 Chicago, IL – ICHEP – Intensity Frontier PI Meeting 2 The High Energy Physics Program Mission …is to understand how the universe works at its most fundamental level: • Discover the most elementary constituents of matter and energy • Probe the interactions between them • Explore the basic nature of space and time Office of High Energy Physics (HEP) fulfills its mission by: • Building projects that enable discovery science • Operating facilities that provide the capability to perform discovery science • Supporting a balanced research program that produces discovery science Our program is formally advised by: • High Energy Physics Advisory Panel (HEPAP) – Jointly chartered by DOE and NSF to advise both agencies • Astronomy and Astrophysics Advisory Committee (AAAC) 0 – Advises DOE, NASA, and NSF on selected issues in astronomy & astrophysics of mutual interest and concern • National Academy of Sciences (NAS) – Established by Congress in 1863 to advise the government and any department thereof on the arts and sciences Aug 5, 2016 Chicago, IL – ICHEP – Intensity Frontier PI Meeting 3 The Next Big Discovery in
    [Show full text]
  • The Universe.Pdf
    Standard 1: Students will o understand the scientific Terms to know evidence that supports theories o Big Bang Theory that explain how the universe o Doppler Effect and the solar system developed. o Redshift They will compare Earth to other o Universe objects in the solar system. Standard 1, Objective 1: Describe both the big bang theory of universe formation and the nebular theory of solar system formation and evidence supporting them. Lesson Objectives • Explain the evidence for an expanding universe. • Describe the formation of the universe according to the Big Bang Theory. Introduction The study of the universe is called cosmology. Cosmologists study the structure and changes in the present universe. The universe contains all of the star systems, galaxies, gas and dust, plus all the matter and energy that exist. The universe also includes all of space and time. Evolution of Human Understanding of the Universe What did the ancient Greeks recognize as the universe? In their model, the universe contained Earth at the center, the Sun, the Moon, five planets, and a sphere to which all the stars were attached. This idea held for many centuries until Galileo's telescope allowed people to recognize that Earth is not the center of the universe. They also found out that there are many more stars than were visible to the naked eye. All of those stars were in the Milky Way Galaxy. 13 Timeline of cosmological theories 4th century BCE — Aristotle proposes a Geocentric (Earth-centered) universe in which the Earth is stationary and the cosmos (or universe) revolves around the Earth.
    [Show full text]
  • Ay 21 - Galaxies and Cosmology Prof
    Ay 21 - Galaxies and Cosmology Prof. S. G. Djorgovski Winter 2021 Cosmology* as a Science • A study of the universe as a whole, its global geometry, dynamics, history, fate, and its major constituents - galaxies and large-scale structures, their formation and evolution • A basic assumption: the physical laws are the same at all times and everywhere – Some aspects of this are testable – But a new and unexpected physics can show up, e.g., dark matter, dark energy • Only one object of study, and all we can do is look at the surface of the past light cone • Observations tend to be difficult, and subject to biases and selection effects * From Greek kosmos = order; see also cosmetology … The Evolution of the Cosmological Thought … From magical and arbitrary to rational and scientific Folklore to theology to philosophy to physics … Away from anthropocentric/anthropomorphic The Copernican revolution … From final and static to evolving and open-ended The Darwinian revolution … From absolute certainty to an ever expanding sphere of knowledge and a boundary of unknown Cosmology today is a branch of physics Dust Off Your Astronomical Units! • Distance: – Astronomical unit: the distance from the Earth to the Sun, 1 au = 1.496Í1013 cm – Light year: c Í1 yr, 1 ly = 9.463 Í1017 cm – Parsec: the distance from which 1 au subtends an angle of 1 arcsec, 1 pc = 3.086 Í1018 cm = 3.26 ly = 206,264.8 au • Mass and Luminosity: 33 – Solar mass: 1 M = 1.989 Í10 g 33 – Solar luminosity: 1 L = 3.826Í10 erg/s Fluxes and Magnitudes For historical reasons, fluxes in the optical and IR are measured in magnitudes: m = −2.5log10 F + constant Usually integrated over some finite bandpass, e.g., V band (l ~ 550 nm): € fl mV = −2.5log10 F + constant flux integrated over the range l of wavelengths for this band € If the flux is integrated over the entire spectrum, then m is the bolometric magnitude.
    [Show full text]