Why this hole in Puerto Rico? Centaurus A NGC5128 Radio continuum. Incoherent Scatter Radar (430 MHz) Hours. Proceedings of IRE Nov 1958
|
|
- Solomon Melton
- 6 years ago
- Views:
Transcription
1 Arecibo San Juan Mayaguez Daniel R. Altschuler NAIC-Arecibo Observatory Ponce The Arecibo Observatory is Part of NAIC which is operated by Cornell University under a cooperative agreement with the NSF Puerto Rico NATIONAL ASTRONOMY AND IONOSPHERE CENTER (NAIC) Arecibo Observatory Operated as a visitor oriented national research Facility by Cornell University under a cooperative Agreement with the National Science Foundation (NSF) FACILITIES m Radio Telescope Became operational in 1963 Reflector surface upgrade in 1974 Gregorian upgrade 1997 Optical and Lidar Laboratory RESEARCH AREAS Radio Astronomy ~75% (galactic and extra galactic spectroscopy, pulsars, VLBI) Planetary Studies ~ 10% (planetary surfaces, comets, asteroids) Space and Atmospheric Sciences ~15% (ISR, LIDAR ) OPERATION ~ 140 Permanent employees (~ 18 scientific staff) Educational Facility M31 - Andromeda Pulsars Periods from 1.57 ms to 8.5 sec Neutral Hydrogen in galaxies 1420 MHz / 21 cm Other spectral features from interstellar molecules 1
2 Incoherent Scatter Radar (430 MHz) Centaurus A NGC5128 Radio continuum Solar Minimum Altitude km Solar Maximun Hours Proceedings of IRE Nov 1958 A parabolic reflector was initially considered but later in order to be able to reach a large area of the sky it was decided to build a sphere 1959 Why this hole in Puerto Rico? Karst formation offers convenient holes Need proximity to equator to observe planets November 1959 Contract signed between Cornell and AFCRL/ARPA
3 October 29, 1962 March Azimuth lift surface June 1963 June 1963 reflector August 14, 1963 The original line feed was 96 feet (29 meters) long. It was built of aluminum and had a weight of about 10,000 pounds. Operated at a frequency of 430 MHz. (Now at Learning Center) Telescope Optics I Line feeds 3
4 April 7, 1964 First radar echo form Mercury 1964 Nature 1965 FIRST ARECIBO UPGRADE NEW SURFACE (RMS < 3mm) HIGH FREQUENCY OPERATION (SPECTRAL LINE OF NEUTRAL HYDROGEN AT MHz) 2 - NEW 2380 MHz RADAR (S-BAND). JULY PSR FIRST DETECTED (Joseph Taylor and Russell Hulse) First Upgrade New surface Last Panel # 38,778 - November 1973 Discovered in 1974 at Arecibo it consists of a binary neutron star system one of which pulsates towards the Earth. The reducing orbital period represents a loss of energy, which can only be accounted for by gravitational radiation. 4
5 Nature 19 The orbit of the pulsar appears to rotate with time; in the diagram, notice that the orbit is not a closed ellipse, but a continuous elliptical arc whose point of closest approach (periastron) rotates with each orbit. The rotation of the pulsar's periastron is analogous to the advance of the perihelion of Mercury in its orbit. The observed advance for PSR is about 4.2 degrees per year. The pulsar's periastron advances in a single day by the same amount as Mercury's perihelion advances in a century. 700,000km 7.75 h 35,000 x Mercury Hulse - Taylor Nobel Prize 1993 GREGORIAN UPGRADE Ground Screen to reduce spillover noise focus 2 New drive systems including active tie-downs 3 Replace line feeds with a reflector feed system Gregorian Optics 4 New receivers 5 New S-band transmitter with twice the power 6 Improve surface accuracy of reflector to reach 10 GHz 5
6 May New Transmitter in Gregorian Gregorian receivers Horns 6
7 secondary horns tertiary Radio pulses from a neutron star at a distance of 2000 light years in the Virgo constellation (the pulsar PSR ) provided the first evidence for an extra-solar planetary system. Alexander Wolszczan discovered these planets in 1991 using the Arecibo radio telescope Two planets (B y C) have masses similar to Earth, and the third one (A) is like the Moon. Planet D Planets orbiting Pulsar stamp Radar image of Venus using Arecibo and GBT D. Campbell, L. Carter et al. 7
8 Venus at 2 km resolution Arecibo radar image 1999 jm8 NEO 1999 JM 8 distance 9 million km size 3 km resolution 15 meter Ice on the north pole of Mercury The brighter colors show areas that reflect radar microwaves best. These regions caused great excitement when they were discovered. Astronomers believe that the shiny circles near Mercury's Poles are patches of ice in the bottoms of craters never reached by sunlight. 400x400 km; 1.5 km resolution ALFA, operating between MHz, will consist of a cluster of seven dualpolarization feeds and cooled receivers, a fiber-optical transmission system, and digital back-end signal processors. The system will enable deep surveys of, among others, new pulsars, HI in the Milky Way Galaxy and HI in external galaxies. Front end built by CSRIO Australia Telescope National Facilty 8
9 PULSAR SURVEYS ALFA will discover 1000 new pulsars Understand populations seen in radio and gamma ray bands Test notion that some pulsars are strange (quark) stars Exotic binaries Pulsar-pulsar Pulsar-black hole Test theories of binary evolution Test fundamental physics Survey simulations by J. Cordes, D. Chernoff, and Z. Arzoumanian Large scale structure Searches for galaxies in the ZOA HI SEARCHES Searches for underluminous objects OH megamasers 0.09 < z <
10 understanding OPUS Angel Ramos Foundation Visitor Center ,000 visitors year Independently funded Conference Center 2001 FACILITIES Exhibit Program Who knows A Day in the life of the Arecibo Observatory A Scale Model of the Solar System If we keep it up we might get rid of this pollution in the future More than Meets the Eye 10
ALFA: Radio Astronomy in the Multibeam Era The ALFA Project
ALFA: Radio Astronomy in the Multibeam Era The ALFA Project Avinash Deshpande Senior Research Associate Radio Astronomy Group ALFA Scientific Coordinator Arecibo L-Band Feed Array Will revolutionize our
More informationThe Robert C. Byrd Green Bank Telescope
The Robert C. Byrd Green Bank Telescope Phil Jewell National Radio Astronomy Observatory 520 Edgemont Road Charlottesville, VA 22903-2475 USA pjewell@nrao.edu NAIC-NRAO School on Single Dish Radio Astronomy
More informationIntroduction The Role of Astronomy p. 3 Astronomical Objects of Research p. 4 The Scale of the Universe p. 7 Spherical Astronomy Spherical
Introduction The Role of Astronomy p. 3 Astronomical Objects of Research p. 4 The Scale of the Universe p. 7 Spherical Astronomy Spherical Trigonometry p. 9 The Earth p. 12 The Celestial Sphere p. 14 The
More informationHistory of Radioastronomy from 1800 to 2007
History of Radioastronomy from 1800 to 2007 (a personal selection) Steve Torchinsky Observatoire de Paris History of radio astronomy, Steve Torchinsky Goutelas, 4 June 2007 1 Herschel discovers invisible
More informationAN INTRODUCTIONTO MODERN ASTROPHYSICS
AN INTRODUCTIONTO MODERN ASTROPHYSICS Second Edition Bradley W. Carroll Weber State University DaleA. Ostlie Weber State University PEARSON Addison Wesley San Francisco Boston New York Cape Town Hong Kong
More informationIntroduction to the Universe. What makes up the Universe?
Introduction to the Universe What makes up the Universe? Objects in the Universe Astrophysics is the science that tries to make sense of the universe by - describing the Universe (Astronomy) - understanding
More informationThe Arecibo Radiotelescope. World s largest radio/radar telescope
The Arecibo Radiotelescope World s largest radio/radar telescope The Radio Telescope of the Arecibo Observatory National Astronomy and Ionosphere Center Reflector diameter of 305 meters (1000 ft) Built
More informationIntroduction to the Universe
What makes up the Universe? Introduction to the Universe Book page 642-644 Objects in the Universe Astrophysics is the science that tries to make sense of the universe by - describing the Universe (Astronomy)
More informationAstronomy Today. Eighth edition. Eric Chaisson Steve McMillan
Global edition Astronomy Today Eighth edition Eric Chaisson Steve McMillan The Distance Scale ~1 Gpc Velocity L Distance Hubble s law Supernovae ~200 Mpc Time Tully-Fisher ~25 Mpc ~10,000 pc Time Variable
More informationNOTES: Arvind Borde The Bending of Light and Telescopes. Light travels in straight lines... except when it bends (refraction).
Arvind Borde The Bending of Light and Telescopes Light travels in straight lines...... except when it bends (refraction). 1 The bending of light causes lensing. 2 And lensing is what our eyes, cameras,
More informationFundamental Astronomy
H. Karttunen P. Kroger H. Oja M.Poutanen K.J. Donner (Eds.) Fundamental Astronomy Fifth Edition With 449 Illustrations Including 34 Colour Plates and 75 Exercises with Solutions < J Springer VII 1. Introduction
More informationPulsars. in this talk. Pulsar timing. Pulsar timing. Pulsar timing. Pulsar timing. How to listen to what exotic. are telling us! Paulo César C.
How to listen to what exotic Pulsars are telling us! in this talk 1. 2. 3. Test of gravitational theories using binary pulsars 4. Probing the equation of state of super-dense matter Paulo César C. Freire
More informationThe point in an orbit around the Sun at which an object is at its greatest distance from the Sun (Opposite of perihelion).
ASTRONOMY TERMS Albedo Aphelion Apogee A measure of the reflectivity of an object and is expressed as the ratio of the amount of light reflected by an object to that of the amount of light incident upon
More informationChapter 18: Studying Space Astronomy: The Original Science
Chapter 18: Studying Space 18.1 Astronomy: The Original Science What is Astronomy? Astronomy is the study of the universe People in ancient cultures used the seasonal cycles of the stars, planets, and
More information2019 Astronomy Team Selection Test
2019 Astronomy Team Selection Test Acton-Boxborough Regional High School Written by Antonio Frigo Do not flip over this page until instructed. Instructions You will have 45 minutes to complete this exam.
More informationTHE SIZE AND SCALE OF THE UNIVERSE
1 THE SIZE AND SCALE OF THE UNIVERSE 1. Scientific notation review Write the following in proper scientific notation, giving the proper number of significant figures. 1.a Thirty-one million, seven hundred
More informationBeyond Our Solar System Chapter 24
Beyond Our Solar System Chapter 24 PROPERTIES OF STARS Distance Measuring a star's distance can be very difficult Stellar parallax Used for measuring distance to a star Apparent shift in a star's position
More informationTelescopes, Observatories, Data Collection
Telescopes, Observatories, Data Collection Telescopes 1 Astronomy : observational science only input is the light received different telescopes, different wavelengths of light lab experiments with spectroscopy,
More informationA Survey of GBT Science. Felix J. Lockman Green Bank Observatory, Green Bank, WV
A Survey of GBT Science Felix J. Lockman Green Bank Observatory, Green Bank, WV GBT Surveys Workshop November 13, 2018 National Radio Quiet Zone Unblocked Optics for High Dynamic Range GBT Surveys Workshop
More informationAstronomy 1504/15014 Section 20
1 point each Astronomy 1504/15014 Section 20 Midterm 1 (Practice Exam) September 21, 2015 Exam Version A Choose the answer that best completes the question. Read each problem carefully and read through
More informationProperties of the Solar System
Properties of the Solar System Dynamics of asteroids Telescopic surveys, especially those searching for near-earth asteroids and comets (collectively called near-earth objects or NEOs) have discovered
More informationDirected Reading. Section: Viewing the Universe THE VALUE OF ASTRONOMY. Skills Worksheet. 1. How did observations of the sky help farmers in the past?
Skills Worksheet Directed Reading Section: Viewing the Universe 1. How did observations of the sky help farmers in the past? 2. How did observations of the sky help sailors in the past? 3. What is the
More informationPaper Reference. Paper Reference(s) 1627/01 Edexcel GCSE Astronomy Paper 01. Friday 15 May 2009 Morning Time: 2 hours
Centre No. Candidate No. Paper Reference(s) 1627/01 Edexcel GCSE Astronomy Paper 01 Friday 15 May 2009 Morning Time: 2 hours Materials required for examination Calculator Items included with question papers
More informationPhys Homework Set 2 Fall 2015 Exam Name
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Increasing the temperature of a blackbody by a factor of 2 will increase its energy by
More informationPhys Homework Set 2 Fall 2015 Exam Name
Exam Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) About how many stars are visible on a clear, dark night with the naked eye alone? 1)
More informationScience Highlights from The Green Bank Telescope. Felix Jay Lockman NRAO, Green Bank WV
Science Highlights from The Green Bank Telescope Felix Jay Lockman NRAO, Green Bank WV The Green Bank Telescope (GBT) Sensitivity Radio Quiet Zone 100 meters Receivers cover 0.1 to 100 GHz >85% of total
More informationNAIC NAIC PLANETARY RADAR ASTRONOMY STUDYING SOLAR SYSTEM BODIES WITH RADAR DON CAMPBELL
NAIC PLANETARY RADAR ASTRONOMY or STUDYING SOLAR SYSTEM BODIES WITH RADAR DON CAMPBELL NAIC NAIC PLANETARY RADAR ASTRONOMY NAIC GOOD ASPECTS Transmitted signal Can control: Power Polarization Frequency
More informationAnswer Key for Exam C
Answer Key for Exam C 1 point each Choose the answer that best completes the question. Read each problem carefully and read through all the answers. Take your time. If a question is unclear, ask for clarification
More informationAnswer Key for Exam B
Answer Key for Exam B 1 point each Choose the answer that best completes the question. Read each problem carefully and read through all the answers. Take your time. If a question is unclear, ask for clarification
More informationX Rays must be viewed from space used for detecting exotic objects such as neutron stars and black holes also observing the Sun.
6/25 How do we get information from the telescope? 1. Galileo drew pictures. 2. With the invention of photography, we began taking pictures of the view in the telescope. With telescopes that would rotate
More informationThe Milky Way Galaxy
The Milky Way Galaxy A. Expert - I have done a lot of reading in this area already. B. Above Average - I have learned some information about this topic. C. Moderate - I know a little about this topic.
More informationBoy Scout Badge Workshop ASTRONOMY
Boy Scout Badge Workshop ASTRONOMY Welcome to the Schenectady Museum & Suits-Bueche Planetarium! During this workshop, you will explore the museum, see a show in the planetarium, and try out some other
More informationQUIZ 1. Name. Part A. A1. The "Local Group" refers to
Name QUIZ 1 Attempt all 25 questions in Part A and 1 of the 6 questions in Part B. Please write all answers to Part A on these sheets; extra paper is available if needed. Write your answer to the B question
More informationUniversity of Naples Federico II, Academic Year Istituzioni di Astrofisica, read by prof. Massimo Capaccioli. Lecture 19.
University of Naples Federico II, Academic Year 2011-2012 Istituzioni di Astrofisica, read by prof. Massimo Capaccioli Lecture 19 Neutron stars Learning outcomes The student will see: xxx Discovery of
More informationTesting Gravity and Extreme Physics with Pulsars
Testing Gravity and Extreme Physics with Pulsars John Rowe Animation Australia Telescope National Facility, CSIRO René Breton School of Physics & Astronomy The University of Manchester Liverpool Physics
More informationV. Astronomy Section
EAS 100 Planet Earth Lecture Topics Brief Outlines V. Astronomy Section 1. Introduction, Astronomical Distances, Solar System Learning objectives: Develop an understanding of Earth s position in the solar
More information... Explain how an orbiting planet causes a Doppler shift in the spectrum of a star
Q1.In 1999 a planet was discovered orbiting a star in the constellation of Pegasus. (a) State one reason why it is difficult to make a direct observation of this planet..... (1) The initial discovery of
More informationEarth in the Universe Unit Notes
Earth in the Universe Unit Notes The Universe - everything everywhere, 15-20 billion years old Inside the universe there are billions of Galaxies Inside each Galaxy there are billions of Solar Systems
More informationScience Practice Astronomy (AstronomyJSuber)
Name: Date: 1. The pull of gravity on Earth is a direct result of the A. mass of Earth. B. magnetic field of Earth. C. rotation of Earth on its axis. D. weight of Earth's atmosphere. This online assessment
More informationChapter 5 Light: The Cosmic Messenger. Copyright 2012 Pearson Education, Inc.
Chapter 5 Light: The Cosmic Messenger 5.1 Basic Properties of Light and Matter Our goals for learning: What is light? What is matter? How do light and matter interact? What is light? Light is an electromagnetic
More informationCST Prep- 8 th Grade Astronomy
CST Prep- 8 th Grade Astronomy Chapter 15 (Part 1) 1. The theory of how the universe was created is called the 2. Which equation states that matter and energy are interchangeable? 3. All matter in the
More informationChapter 26. Objectives. Describe characteristics of the universe in terms of time, distance, and organization
Objectives Describe characteristics of the universe in terms of time, distance, and organization Identify the visible and nonvisible parts of the electromagnetic spectrum Compare refracting telescopes
More informationAstro 201: Sept. 23, 2010
Astro 201: Sept. 23, 2010 Turn in IR Camera write- up in front of class Pick up graded HW along side of classroom, will talk about grading in class First MIDTERM: Tuesday, Sept. 28 covers through the end
More informationChapter. Origin of Modern Astronomy
Chapter Origin of Modern Astronomy 22.1 Early Astronomy Ancient Greeks Astronomy is the science that studies the universe. It includes the observation and interpretation of celestial bodies and phenomena.
More informationCollecting Light. In a dark-adapted eye, the iris is fully open and the pupil has a diameter of about 7 mm. pupil
Telescopes Collecting Light The simplest means of observing the Universe is the eye. The human eye is sensitive to light with a wavelength of about 400 and 700 nanometers. In a dark-adapted eye, the iris
More informationLESSON 1. Solar System
Astronomy Notes LESSON 1 Solar System 11.1 Structure of the Solar System axis of rotation period of rotation period of revolution ellipse astronomical unit What is the solar system? 11.1 Structure of the
More information3. c 4. a 5. f 6. b 7. e. 1. Stars are bright and hot. 2. Distances between stars are measured in light-years. 3. The sun is a yellow star.
Stars, Galaxies, Use Target Reading Skills Check student definitions for accuracy. 1. Electromagnetic radiation is energy that can travel through space in the form of waves. 2. visible light 3. wavelength
More informationAstronomy 103: First Exam
Name: Astronomy 103: First Exam Stephen Lepp October 27, 2010 Each question is worth 2 points. Write your name on this exam and on the scantron. 1 Short Answer A. What is the largest of the terrestrial
More informationa. 0.5 AU b. 5 AU c. 50 AU d.* AU e AU
1 AST104 Sp04: WELCOME TO EXAM 1 Multiple Choice Questions: Mark the best answer choice. Read all answer choices before making selection. (No credit given when multiple answers are marked.) 1. A galaxy
More informationMonday, October 21, 2013 Third exam this Friday, October 25. Third Sky Watch watch the weather! Review sheet posted today. Review Thursday, 5 6 PM,
Monday, October 21, 2013 Third exam this Friday, October 25. Third Sky Watch watch the weather! Review sheet posted today. Review Thursday, 5 6 PM, Room WEL 2.256 Lecture 19 posted today Reading: Chapter
More informationDirected Reading A. Section: The Life Cycle of Stars TYPES OF STARS THE LIFE CYCLE OF SUNLIKE STARS A TOOL FOR STUDYING STARS.
Skills Worksheet Directed Reading A Section: The Life Cycle of Stars TYPES OF STARS (pp. 444 449) 1. Besides by mass, size, brightness, color, temperature, and composition, how are stars classified? a.
More informationWhat is the solar system?
Notes Astronomy What is the solar system? 11.1 Structure of the Solar System Our solar system includes planets and dwarf planets, their moons, a star called the Sun, asteroids and comets. Planets, dwarf
More informationThe Night Sky. The Universe. The Celestial Sphere. Stars. Chapter 14
The Night Sky The Universe Chapter 14 Homework: All the multiple choice questions in Applying the Concepts and Group A questions in Parallel Exercises. Celestial observation dates to ancient civilizations
More informationANSWER KEY. Stars, Galaxies, and the Universe. Telescopes Guided Reading and Study. Characteristics of Stars Guided Reading and Study
Stars, Galaxies, a the Universe Stars, Galaxies, and the Universe Telescopes Use Target Reading Skills Check student definitions for accuracy. 1. Electromagneticradiationisenergythatcan travel through
More informationWhy Use a Telescope?
1 Why Use a Telescope? All astronomical objects are distant so a telescope is needed to Gather light -- telescopes sometimes referred to as light buckets Resolve detail Magnify an image (least important
More informationEditorial comment: research and teaching at UT
Wednesday, March 23, 2017 Reading for Exam 3: Chapter 6, end of Section 6 (binary evolution), Section 6.7 (radioactive decay), Chapter 7 (SN 1987A), Background: Sections 3.1, 3.2, 3.3, 3.4, 3.5, 3.8, 3.10,
More informationWhat is Earth Science?
What is Earth Science? A.EARTH SCIENCE: the study of Earth and its history B. Earth science is divided into 4 main branches: 1. Geology: study of the lithosphere 2. Oceanography: study of oceans 3. Meteorology:
More informationBinary Pulsars and Evidence for Gravitational Radiation
Binary Pulsars and Evidence for Gravitational Radiation Matthew S. Paoletti Physics 798G March 29, 2007 http://www.rowes.com.au/csiro.htm Motivation Three classical tests of GR Bending of light as it passes
More informationCosmic Microwave Background Radiation
Base your answers to questions 1 and 2 on the passage below and on your knowledge of Earth Science. Cosmic Microwave Background Radiation In the 1920s, Edwin Hubble's discovery of a pattern in the red
More informationIB Physics - Astronomy
Solar System Our Solar System has eight planets. The picture below shows their relative sizes, but NOT their relative distances. A planet orbits the sun, and has gravitationally cleared its orbital area
More informationastronomy A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times.
astronomy 2008 1. A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times. 5. If the distance between the Earth and the Sun were
More informationAstronomy Ch. 22 Neutron Stars and Black Holes. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Name: Period: Date: Astronomy Ch. 22 Neutron Stars and Black Holes MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In a neutron star, the core
More informationAstronomy across the spectrum: telescopes and where we put them. Martha Haynes Discovering Dusty Galaxies July 7, 2016
Astronomy across the spectrum: telescopes and where we put them Martha Haynes Discovering Dusty Galaxies July 7, 2016 CCAT-prime: next generation telescope CCAT Site on C. Chajnantor Me, at 18,400 feet
More informationAn Introduction to Radio Astronomy
An Introduction to Radio Astronomy Second edition Bernard F. Burke and Francis Graham-Smith CAMBRIDGE UNIVERSITY PRESS Contents Preface to the second edition page x 1 Introduction 1 1.1 The role of radio
More information7. Telescopes: Portals of Discovery Pearson Education Inc., publishing as Addison Wesley
7. Telescopes: Portals of Discovery Parts of the Human Eye pupil allows light to enter the eye lens focuses light to create an image retina detects the light and generates signals which are sent to the
More informationCharles Keeton. Principles of Astrophysics. Using Gravity and Stellar Physics. to Explore the Cosmos. ^ Springer
Charles Keeton Principles of Astrophysics Using Gravity and Stellar Physics to Explore the Cosmos ^ Springer Contents 1 Introduction: Tools of the Trade 1 1.1 What Is Gravity? 1 1.2 Dimensions and Units
More informationThe Search for Extraterrestrial Intelligence
The Search for Extraterrestrial Intelligence Methods for searching for life! Direct searches for microbial life in the solar system! rovers, sample return missions to Mars, Europa, etc.! Indirect searches
More informationChapter 26 Section 1 pages Directed Reading Section: Viewing the Universe
Name: Period: Chapter 26 Section 1 pages 659-666 Directed Reading Section: Viewing the Universe 1. How did observations of the sky help sailors in the past? 2. What is the main reason people study the
More informationLecture 6: The Physics of Light, Part 1. Astronomy 111 Wednesday September 13, 2017
Lecture 6: The Physics of Light, Part 1 Astronomy 111 Wednesday September 13, 2017 Reminders Star party tonight! Homework #3 due Monday Exam #1 Monday, September 25 The nature of light Look, but don t
More informationModern Astronomy Review #1
Modern Astronomy Review #1 1. The red-shift of light from distant galaxies provides evidence that the universe is (1) shrinking, only (3) shrinking and expanding in a cyclic pattern (2) expanding, only
More informationPhysical Science 1 Chapter 16 INTRODUCTION. Astronomy is the study of the universe, which includes all matter, energy, space and time.
INTRODUCTION Astronomy is the study of the universe, which includes all matter, energy, space and time. Although the universe is vast and almost beyond imagination, much is known about its make-up and
More informationThe Milky Way Galaxy. Some thoughts. How big is it? What does it look like? How did it end up this way? What is it made up of?
Some thoughts The Milky Way Galaxy How big is it? What does it look like? How did it end up this way? What is it made up of? Does it change 2 3 4 5 This is not a constant zoom The Milky Way Almost everything
More informationMeteor Science and Aeronomy Using the Arecibo VHF and UHF Radars.
Meteor Science and Aeronomy Using the Arecibo VHF and UHF Radars. Bolide AIDA 1989 Bolide AIDA was in a near-earth asteroidal orbit with V ~15.5 km/sec, a period of ~1.4 yrs, aubritic compositon, ~30 kg
More informationAssignments. For Mon. 1 st Midterm is Friday, Oct. 12. Read Ch. 6 Optionally do MT1-sample-problems
Assignments For Mon. Read Ch. 6 Optionally do MT1-sample-problems 1 st Midterm is Friday, Oct. 12 Chapter 5 Light: The Cosmic Messenger Thermal Radiation 1. Hotter objects emit photons with a higher average
More information2. The diagram below represents the apparent path of the Sun as seen by an observer at 65 N on March 21.
1. Which diagram best represents the regions of Earth in sunlight on June 21 and December 21? [NP indicates the North Pole and the shading represents Earth's night side. Diagrams are not drawn to scale.]
More informationAST 101 INTRODUCTION TO ASTRONOMY SPRING MIDTERM EXAM 1 TEST VERSION 1 ANSWERS NOTE: Question 20 Fixed
AST 101 INTRODUCTION TO ASTRONOMY SPRING 2008 - MIDTERM EXAM 1 TEST VERSION 1 ANSWERS NOTE: Question 20 Fixed Multiple Choice. In the blanks provided before each question write the letter for the phrase
More informationGCSE Astronomy Course Guide. Each Tuesday after school
GCSE Astronomy 2016 17 Course Guide Each Tuesday after school 3.30 5.00 Exam Board Edexcel Controlled Assessment Deadline - 4 th April 2017. Exam Wednesday 7 th June 2017, 1.30pm Edexcel GCSE Astronomy
More informationA Random Walk Through Astrometry
A Random Walk Through Astrometry Astrometry: The Second Oldest Profession George H. Kaplan Astronomical Applications Department Astrometry Department U.S. Naval Observatory Random Topics to be Covered
More informationGreen Bank Telescope Science Program. Felix Jay Lockman NRAO, Green Bank WV
Green Bank Telescope Science Program Felix Jay Lockman NRAO, Green Bank WV The Green Bank Observatory A Showcase for the NSF 40,000-50,000 visitors each year NOAA Weather in Focus Photo Contest First Place:
More informationASTRONOMY 1 FINAL EXAM 1 Name
ASTRONOMY 1 FINAL EXAM 1 Name Multiple Choice (2 pts each) 1. Sullivan Star is an F spectral class star that is part of a binary star system. It has a MS lifetime of 5 billion years. Its life will eventually
More informationThe Big Bang Theory (page 854)
Name Class Date Space Homework Packet Homework #1 Hubble s Law (pages 852 853) 1. How can astronomers use the Doppler effect? 2. The shift in the light of a galaxy toward the red wavelengths is called
More informationChapter 28 Stars and Their Characteristics
Chapter 28 Stars and Their Characteristics Origin of the Universe Big Bang Theory about 10-20 bya all matter in the universe existed in a hot dense state about the size of an atom (tiny). That matter sort
More informationTest ABCDE. 1. What is the oldest era on the geological timescale? A. Precambrian B. Paleozoic C. Mesozoic D. Cenozoic
Test - 8.8 ABCDE 1. What is the oldest era on the geological timescale? A. Precambrian B. Paleozoic C. Mesozoic D. Cenozoic 2. A light-year is defined as- F. the distance from Earth to the Sun. G. the
More informationASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy
Chariho Regional School District - Science Curriculum September, 2016 ASTRONOMY CURRICULUM Unit 1: Introduction to Astronomy OVERVIEW Summary Students will be introduced to the overarching concept of astronomy.
More informationEarth Space Systems. Semester 1 Exam. Astronomy Vocabulary
Earth Space Systems Semester 1 Exam Astronomy Vocabulary Astronomical Unit- Aurora- Big Bang- Black Hole- 1AU is the average distance between the Earth and the Sun (93 million miles). This unit of measurement
More informationMapping the Galaxy using hydrogen
The Swedish contribution to EU-HOU: A Hands-On Radio Astronomy exercise Mapping the Galaxy using hydrogen Daniel Johansson Christer Andersson Outline Introduction to radio astronomy Onsala Space Observatory
More informationIntroduction to Astronomy & Astrophysics (PHY F215) Kaushar Vaidya Ph.D. (Astronomy)
Introduction to Astronomy & Astrophysics (PHY F215) Kaushar Vaidya Ph.D. (Astronomy) vastness and scales (sizes, time, temperature-pressure) (philosophical, exo-planets, detection, alien) nothing like
More informationUNIT 1: EARTH AND THE SOLAR SYSTEM.
UNIT 1: EARTH AND THE SOLAR SYSTEM. 1) A BRIEF HISTORY Theories of the Universe In the second century BC, the astronomer Ptolemy proposed that the Earth was the centre of the Universe, and that the Sun,
More informationPaper Reference. Tuesday 14 June 2005 Morning Time: 2 hours
Centre No. Candidate No. Paper Reference(s) 1627/01 Edexcel GCSE Astronomy Paper 01 Tuesday 14 June 2005 Morning Time: 2 hours Materials required for examination Nil Items included with question papers
More informationASTRONOMY Merit Badge Requirements
ASTRONOMY Merit Badge Requirements 1) Do the following: A) Sketch the face of the moon, indicating on it the locations of at least five seas and five craters. B) Within a single week, sketch the position
More informationEARTH SCIENCE UNIT 9 -NOTES ASTRONOMY
EARTH SCIENCE UNIT 9 -NOTES ASTRONOMY UNIT 9- ASTRONOMY 2 THE SOLAR SYSTEM I. The Solar System:. a. Celestial Body:. i. Examples:. b. MAIN COMPONENTS/MEMBERS OF THE SOLAR SYSTEM: i. 1. Planets are objects
More informationMeasuring Light waves
Measuring Light waves We normally measure wavelengths (λ) using nanometers (nm) 1 nm = 10-9 m 400-700 nm Increasing wavelengths (λ)! Visible light has wavelengths between 400-700 nm! To detect other types
More information1 Astronomy: The Original Science
CHAPTER 18 1 Astronomy: The Original Science SECTION Studying Space BEFORE YOU READ After you read this section, you should be able to answer these questions: How do astronomers define a day, a month,
More informationdays to rotate in its own axis km in diameter ( 109 diameter of the Earth ) and kg in mass ( mass of the Earth)
The Sun - It is located at the centre of our solar system with all planets and objects (comets and asteroids) revolving around it Page 1 of 6 - It s gravitational pull keeps the planets and other objects
More informationPractice Test DeAnza College Astronomy 04 Test 1 Spring Quarter 2009
Practice Test DeAnza College Astronomy 04 Test 1 Spring Quarter 2009 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. Mark answer on Scantron.
More informationGalaxies & Introduction to Cosmology
Galaxies & Introduction to Cosmology Other Galaxies: How many are there? Hubble Deep Field Project 100 hour exposures over 10 days Covered an area of the sky about 1/100 the size of the full moon Probably
More information3. The diagram below shows the Moon at four positions in its orbit around Earth as viewed from above the North Pole.
1. Which object orbits Earth in both the Earth-centered (geocentric) and Sun-centered (heliocentric) models of our solar system? (1) Polaris (3) the Sun (2) Venus (4) the Moon 2. A cycle of Moon phases
More informationThe Atlanta Astronomy Club. Charlie Elliot Chapter. Observing 101
The Atlanta Astronomy Club Charlie Elliot Chapter Observing 101 1 Observing 101 Dec 2010 Astro Events Target List Featured Object 2 Astro Events Tonight: Sunset at 5:29 PM Moon sets at 4:34 PM Mercury
More informationby Bill Gabella 26 June 2018
Detection of Gravitational Wave Event GW170817 is First with Electromagnetic Signature ---from a Binary Neutron Star Merger detected by the Laser Interferometric Gravitational Wave Observatory (LIGO) by
More informationAstronomy 1143 Final Exam Review Answers
Astronomy 1143 Final Exam Review Answers Prof. Pradhan April 24, 2015 What is Science? 1. Explain the difference between astronomy and astrology. 2. What number is the metric system based around? What
More information