# Astronomy 1. 10/17/17 - NASA JPL field trip 10/17/17 - LA Griffith Observatory field trip

Size: px
Start display at page:

Download "Astronomy 1. 10/17/17 - NASA JPL field trip 10/17/17 - LA Griffith Observatory field trip"

Transcription

1 Astronomy 1 10/17/17 - NASA JPL field trip 10/17/17 - LA Griffith Observatory field trip

2 CH 1 Here and NOW Where do we fit in the Universe? How-small-we-really-are-in-this-universe

3

4 Start here: The figure shows a region about 16 meters (52 feet) from the edge of the street to the door of this Building. Figure 1-1 p3

5 Each picture in the following sequence shows you a frame or field of view within the universe that is 100 times wider than the preceding picture.

6 In this figure, your field of view has increased in size by a factor of 100, and you can see an area 1.6 kilometers (1 mile) in diameter. Figure 1-2 p3

7 This figure has a span of 160 kilometers (100 miles).

8 At the next step in your journey, you will see the entire planet Earth about 13,000 km (8000 miles) in diameter The picture shows most of the daylight side. The blurriness at the extreme right is the sunset line. HW (Learning to look 1) In Figure 1-4 of the lecture the division between daylight and darkness is at the right on the globe of the Earth. How do you know this is the sunset line and not the sunrise line? Figure 1-4 p4

9 The rotation of Earth on its axis each 24 hours carries you eastward. As you cross the sunset line into darkness, you say the sun has set.

10 At the scale of this figure, the atmosphere on which your life depends is thinner than a strand of thread.

11 Enlarge your field of view again by a factor of 100, and you see a region 1,600,000 km (1 million miles) wide. Earth is the small blue dot in the center. The moon with a diameter of only about one-fourth that of Earth is an even smaller dot along its orbit.

12 If you had a high-mileage car, it may have made the equivalent of a trip to the moon which has an average distance from Earth of 380,000 kilometers (240,000 miles). These numbers are so large that it is inconvenient to write them out. 30 earths

13 Astronomy is the science of big numbers. You will use numbers much larger than these to describe the universe. Rather than writing out these numbers, it is more convenient to write them in scientific notation. This is nothing more than a simple way to write numbers without writing lots of zeros. For example, you would write 380,000 as 3.8 x 10 5.

14

15 Enlarge your field of view again by a factor of 100, and you see a region 1,600,000 km = 1.6 x 10 6 (1 million miles) wide. Earth is the small blue dot in the center. The moon with a diameter of only about one-fourth that of Earth is an even smaller dot along its orbit.

16 When you once again enlarge your field of view by a factor of 100, Earth, its moon, and the moon s orbit all lie in the small red box at lower left. This figure has a diameter of about 1.6 x 10 8 kilometers.

17 Now, you can see the sun and two other planets that are part of our solar system. Our solar system consists of the sun, its family of planets, and some smaller bodies such as moons, asteroids, and comets. Like Earth, Venus and Mercury are planets small, nonluminous bodies that shine by reflecting light. Venus is about the size of Earth and Mercury is a bit larger than Earth s moon. In this figure, they are both too small to be seen as anything but tiny dots.

18 The sun is a star a self-luminous ball of hot gas that generates its own energy. The sun is 110 times larger in diameter than Earth, but it too is nothing more than a dot in the diagram. Another way astronomers deal with large numbers is to define new units: The average distance from Earth to the sun is called the astronomical unit (AU) a distance of 1.5 x 10 8 kilometers (93 million miles). For example, you can say, the average distance from Venus to the sun is about 0.7 AU.

19 After just six steps, each enlarging by a factor of 100, you now see the entire solar system. Your view now is 1 trillion (10 12 ) times wider than in the first figure. The details of the previous figure are lost in the red square at the center of this figure. You see only the brighter, more widely separated objects as you back away.

20 The sun, Mercury, Venus, and Earth lie so close together that you cannot separate them at this scale. Mars, the next outward planet, lies only 1.5 AU from the sun.

21 In contrast, Jupiter, Saturn, Uranus, and Neptune are so far from the sun that they are easy to find in the figure. Light from the sun reaches Earth in only 8 minutes, but it takes over 4 hours to reach Neptune.* Pluto orbits mostly outside Neptune s orbit, but it is no longer considered a major planet. * See the definition of a light year

22 When you again enlarge your field of view by a factor of 100 (10 14 ) the solar system becomes invisibly small. The sun is only a point of light, and all the planets and their orbits are now crowded into the small red square at the center. The planets are too small and reflect too little light to be visible so near the brilliance of the sun.

23

24 Nor are any stars visible except for the sun. The sun is a fairly typical star, a bit larger than average, and is located in a fairly normal neighborhood in the universe. Although there are many billions of stars like the sun, none is close enough to be visible in the figure.

25 The stars are separated by average distances about 30 times larger than this view, which has a diameter of 11,000 AU. It is difficult to grasp the isolation of the stars. If the sun were represented by a golf ball in New York City, the nearest star would be another golf ball in Chicago. How far is the nearest Star

26 Now, your field of view has expanded to a diameter a bit over 1 million AU. The sun is at the center, and you see a few of the nearest stars. These stars are so distant that it is not reasonable to give their distances in AU.

27 Astronomers have defined a new larger unit of distance the lightyear. One light-year (ly) is the distance that light travels in one year roughly km or 63,000 AU.

28 The diameter of your field of view in the figure is 17 ly. The nearest star to the sun, Proxima Centauri, is 4.2 ly from Earth. In other words, light from Proxima Centauri takes 4.2 years to reach Earth.

29 Although stars are roughly the same size as the sun, they are so far away that you cannot see them as anything but points of light. Even with the largest telescopes on Earth, you still see only points of light when you look at stars. Any planets that might circle those stars are much too small and faint to be visible.

30 In the figure, the sizes of the dots represent not the sizes of the stars but their brightness. This is the custom in astronomical diagrams, and it is also how starlight is recorded. Bright stars make larger spots in a photo or electronic picture than faint stars.

31 When you expand your field of view by another factor of 100, the sun and its neighboring stars vanish into the background of thousands of other stars. The field of view is 1,700 ly in diameter.

32 No one has ever journeyed thousands of light-years to look back and photograph the sun s neighborhood. So, this is a representative picture of a part of the sky that can be used as a reasonable simulation. The sun is faint enough that it would not be easily located in a photo at this scale.

33 Some things that are invisible in this figure are actually critically important. You do not see the thin gas that fills the spaces between the stars.

34 A cloud of gas and dust in space named Messier 78, so far away its light takes 1600 years to reach earth. This image was created by a private citizen, Igor Chekalin of Russia, in response to a worldwide contest sponsored by the European southern observatory (ESO) in Mr. Chekalin s prize was an all-expenses-paid trip to Chile to work with the astronomers using one of ESO s giant telescopes. p3

35 Although those clouds of gas are thinner than the best vacuum produced in laboratories on Earth, it is those clouds that give birth to new stars. The sun formed from such a cloud about 5 billion years ago.

36 If you expand your field of view by a factor of 100, you see our galaxy. A galaxy is a great cloud of stars, gas, and dust bound together by the combined gravity of all the matter.

37 In the night sky, you see our galaxy from the inside as a great, cloudy wheel of stars ringing the sky as the Milky Way. Our galaxy is known as the Milky Way Galaxy.

38 Of course, no one has photographed our galaxy. This figure shows a galaxy similar to our own.

39 Our sun would be invisible in such a picture. If you could see it, you would find it about two-thirds of the way from the center to the edge.

40 Our galaxy, like many others, has graceful spiral arms winding outward through the disk. You will learn that stars are born in great clouds of gas and dust as they pass through these arms.

41 The visible disk of our galaxy is roughly 80,000 ly in diameter. Only a century ago, astronomers thought it was the entire universe an island universe of stars in an otherwise empty vastness.

42 As you expand your field of view by another factor of 100, our galaxy appears as a tiny luminous speck surrounded by other specks. The figure includes a region 17 million ly in diameter. Each dot represents a galaxy.

43 Our galaxy is part of a cluster of a few dozen galaxies. You will find that galaxies are commonly grouped together in clusters. Some of these galaxies have beautiful spiral patterns like our own galaxy, but others do not.

44 The figure represents a view with a diameter of 1.7 billion light years by combining observations with theoretical calculations.

45 The sequence of figures ends here it has reached the limits of the largest telescopes on Earth. Our view with the largest telescopes does not extend as far as the region that would be covered by a figure 100 times larger than the figure.

46 A problem in studying astronomy is keeping a proper sense of scale. Remember that each of the billions of galaxies contains billions of stars. Many of those stars probably have families of planets like our solar system. On some of those billions of planets, liquidwater oceans and protective atmospheres may have sheltered the spark of life.

47 It is possible that some other planets are inhabited by intelligent creatures who share your curiosity, wonder at the scale of the cosmos, and are looking back at you when you gaze into the heavens.

48 Pale Blue Dot

49 Powers of 10 Powers of 10 video Size Comparison Giant Black Hole in NGC 1277 size of universe (Explains Parallax) ON 618 is a very distant and extremely luminous quasar technically, a hyperluminous, broadabsorption line, radio-loud quasar located near the North Galactic Pole in the constellation Canes Venatici. It likely contains one of the most massive known black holes, perhaps weighing in at 66 billion times the mass of the Sun

50 Scientific Method A common misconception in science is that science provides facts or "truth" about a subject. Science is not collection of facts; rather, it is a process of investigation into the natural world and the knowledge generated through that process. This process of investigation is often referred to as the scientific method and it is typically defined in many textbooks and science courses as a linear set of steps through which a scientist moves from observation through experimentation and to a conclusion as shown below:

51

### Michael Seeds Dana Backman. Chapter 1 Here and Now

Michael Seeds Dana Backman Chapter 1 Here and Now The longest journey begins with a single step. - Lao Tse You are about to go on a voyage to the limits of the known universe. You will travel outward,

### Cambridge University Press Origins of Life in the Universe Robert Jastrow and Michael Rampino Excerpt More information PART I

PART I The Universe CHAPTER 1 Our place in the Universe The realm of the galaxies All life as we know it exists within the bounds of the single planet that we call home. For centuries mankind has gazed

### Chapter 16 Lecture Outline. Beyond Our Solar System

Chapter 16 Lecture Outline Beyond Our Solar System The figure shows a region about 52 feet across occupied by a human being, a sidewalk, and a few trees all objects whose size you can understand. Each

### TAKEN FROM HORIZONS 7TH EDITION CHAPTER 1 TUTORIAL QUIZ

TAKEN FROM HORIZONS 7TH EDITION CHAPTER 1 TUTORIAL QUIZ 1. If the solar system is scaled down so that the Sun is represented by a basketball, a. a ping-pong ball located 500 feet away would properly represent

### 1 The Solar System. 1.1 a journey into our galaxy

1 The Solar System Though Pluto, and the far-flung depths of the Solar System, is the focus of this book, it is essential that Pluto is placed in the context of the planetary system that it inhabits our

### PHYSICS 160: Cosmos Spring 2015 Homework #1 MODEL SOLAR SYSTEM. To get an intuitive feeling for the size of the solar system.

Name Date PHYSICS 160: Cosmos Spring 2015 Homework #1 MODEL SOLAR SYSTEM Purpose: To get an intuitive feeling for the size of the solar system. Perhaps you ve heard the phrase to disappear into empty space.

### Phys 100 Astronomy (Dr. Ilias Fernini) Review Questions for Chapter 1

Phys 100 Astronomy (Dr. Ilias Fernini) Review Questions for Chapter 1 MULTIPLE CHOICE (Right answers are reported in red) 1.. A solar system contains a. primarily planets. b. large amounts of gas and dust

### 1UNIT. The Universe. What do you remember? Key language. Content objectives

1UNIT The Universe What do you remember? What are the points of light in this photo? What is the difference between a star and a planet? a moon and a comet? Content objectives In this unit, you will Learn

### Star. Chapter 1: Our Place in the Universe. 1.1 A Modern View of the Universe Our goals for learning:

Chapter 1: Our Place in the Universe 1.1 A Modern View of the Universe Our goals for learning: What is our physical place in the Universe? How did we come to be? How can we know what the Universe was like

### Galaxies and Star Systems

Chapter 5 Section 5.1 Galaxies and Star Systems Galaxies Terms: Galaxy Spiral Galaxy Elliptical Galaxy Irregular Galaxy Milky Way Galaxy Quasar Black Hole Types of Galaxies A galaxy is a huge group of

### Astronomy Unit Notes Name:

Astronomy Unit Notes Name: (DO NOT LOSE!) To help with the planets order 1 My = M 2 V = Venus 3 Eager = E 4 M = Mars 5 Just = J 6 Served = Saturn 7 Us = Uranus 8 N = N 1 Orbit: The path (usually elliptical)

### Understanding the Universe S TA R T ING WITH EARTH A ND B E YO ND

Unit Overview: Understanding the Universe S TA R T ING WITH EARTH A ND B E YO ND Our solar system examining size and scale in space 6.11B UNDERSTAND THAT GRAVITY IS THE FORCE THAT GOVERNS MOTION IN OUR

### The Universe and Galaxies. Adapted from:

The Universe and Galaxies Adapted from: http://www.west-jefferson.k12.oh.us/earthandspacescience.aspx Astronomy The study of objects and matter outside the Earth s atmosphere and of their physical and

### Introduction 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)

### The Sun s center is much hotter than the surface. The Sun looks large and bright in the sky. Other stars look much smaller.

The Sun A star is a huge ball of hot, glowing gases. The Sun is a star. The width of the Sun is equal to the width of 100 Earths placed side by side. The Sun is extremely hot. The surface of the Sun has

### UNIT 1: THE UNIVERSE VOCABULARY

UNIT 1: THE UNIVERSE VOCABULARY Asteroids Asteroid belt Astronomical unit (AU) Black hole Celestial body Cluster of galaxies Comets Constellation Dwarf planets Galaxy Light-year (LY) meteorites Milky Way

### Introduction to Astronomy

Introduction to Astronomy Have you ever wondered what is out there in space besides Earth? As you see the stars and moon, many questions come up with the universe, possibility of living on another planet

### Astronomy: Universe at a Glance, Ch. 1a

1 Astronomy: Universe at a Glance, Ch. 1a What you see depends on from where you observe: Ancients lived in a very dark world at night compared to us today, and the sky was magnificent and enticing. Sometimes

### Chapter 1 Our Place in the Universe. Copyright 2012 Pearson Education, Inc.

Chapter 1 Our Place in the Universe 1 1.1 Our Modern View of the Universe Our goals for learning: What is our place in the universe? How did we come to be? How can we know what the universe was like in

### The Outer Planets. Video Script: The Outer Planets. Visual Learning Company

11 Video Script: 1. For thousands of years people have looked up at the night sky pondering the limits of our solar system. 2. Perhaps you too, have looked up at the evening stars and planets, and wondered

### Tour of the Universe!

Tour of the Universe! Andromeda: M31 (NGC 224, the famous Andromeda Galaxy) is the nearest large galaxy to our own Milky Way galaxy. It is so bright that it is easily seen by naked eye as a faint fuzzy

### Introduction 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

### Earth s Formation Unit [Astronomy] Student Success Sheets (SSS)

Page1 Earth s Formation Unit [Astronomy] Student Success Sheets (SSS) HS-ESSI-1; HS-ESS1-2; HS-ESS1-3; HS-ESSI-4 NGSS Civic Memorial High School - Earth Science A Concept # What we will be learning Mandatory

### 28-Aug-17. A Tour of Our Solar System and Beyond. The Sun

A Tour of Our Solar System and Beyond The Sun diameter = 1,390,000 km = 864,000 mi >99.8% of the mass of the entire solar system surface temperature 5800 C 600 x 10 6 tons H -> 596 x 10 6 tons He per second

### Chapter 1 Lecture. The Cosmic Perspective Seventh Edition. A Modern View of the Universe Pearson Education, Inc.

Chapter 1 Lecture The Cosmic Perspective Seventh Edition A Modern View of the Universe Chapter Opener 1.1 The Scale of the Universe Our goals for learning: What is our place in the universe? How big is

### 9/5/16. Astronomy 1001 Syllabus Sec 1 T,Th AM; Sec 2 T,TH PM. Astronomy 1001 First Assignments: Chapter 1: A Modern View of the Universe

9/5/16 Astronomy 1001 Syllabus Sec 1 T,Th AM; Sec 2 T,TH PM Syllabus: http://www.astro.umn.edu/courses/1001/syllabi/ Lecture notes: http://www.astro.umn.edu/courses/1001/ lecnotes/ Exams: http://www.astro.umn.edu/courses/1001/

### TABLE OF CONTENTS. click one to go to that page, or just go on. What is the Solar System? Neptune (Pluto) The Sun. Asteroids. Mercury.

The Solar System TABLE OF CONTENTS click one to go to that page, or just go on. What is the Solar System? The Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune (Pluto) Asteroids Meteors and Meteorites

### Lecture 3: Chapter 1- Charting the Heavens. Assignment: Read Chapter 1 of Astronomy Today

Lecture 3: Chapter 1- Charting the Heavens Assignment: Read Chapter 1 of Astronomy Today 1.2 Scientific Theory and the Scientific Method Scientific number notation Measures of Distance 1.2 Scientific

### Chapter 1 Our Place in the Universe

Chapter 1 Our Place in the Universe 1.1 Our Modern View of the Universe Topics we will explore: What is our place in the universe? How did we come to be? How can we know what the universe was like in the

### An Introduction to AST 112 Stars, Galaxies, and the Cosmos

An Introduction to AST 112 Stars, Galaxies, and the Cosmos What is Astronomy? 50 years ago, astronomy was the study of everything outside Earth s atmosphere: the planets, the Sun, stars, galaxies, the

### LESSON topic: formation of the solar system Solar system formation Star formation Models of the solar system Planets in our solar system

Unit 2 Lesson 1 LESSON topic: formation of the solar system - Solar system formation - Star formation - Models of the solar system - Planets in our solar system Big bang theory Origin of the universe According

### Explain why miles cannot be used to measure distances in space.

Space SC.8.E.5.1 SC.8.E.5.1: Recognize that there are enormous distances between objects in space and apply our knowledge of light and space travel to understand this difference. Essential Questions: Distances

### Star. Planet. Chapter 1 Our Place in the Universe. 1.1 A Modern View of the Universe Our goals for learning: What is our place in the universe?

Chapter 1 Our Place in the Universe 1.1 A Modern View of the Universe Our goals for learning: What is our place in the universe? How did we come to be? How can we know what the universe was like in the

### The Universe in my pocket. The Solar System. Gloria Delgado Inglada. 4 No. 4. Instituto de Astronomía, UNAM, Mexico

The Universe in my pocket The Solar System 4 No. 4 Gloria Delgado Inglada Instituto de Astronomía, UNAM, Mexico 2 The Solar System is composed of the Sun and of all the bodies travelling around it: planets,

### ASTR 380. The Universe: the context for Life

ASTR 380 The Universe: the context for Life Simple facts: The Universe is vast. The Universe is old. The elements for life are wide-spread. Our physical laws appear universal The Universe is mostly empty!

### Science Benchmark: 06 : 04 Standard 04: Stargazing universe, the light-year, speed of light Grade Benchmark Standard Page

Science Benchmark: 06 : 04 The sun is one of billions of stars in the Milky Way Galaxy, that is one of billions of galaxies in the universe. Scientists use a variety of tools to investigate the nature

### Observational Astronomy Astro-25. Professor Meyer-Canales Saddleback College

Observational Astronomy Astro-25 Professor Meyer-Canales Saddleback College Astronomy Courses Offered at Saddleback College Astronomy 20 - General Astronomy Survey/Lecture course Astronomy 21 - Solar System

### The Earth and the Universe

The Earth and the Universe The exploration of space is called astronomy. Most of our observations in space have come from using telescopes of different kinds. Observing the universe from the ground has

### The Space Around Us. A quick overview of the solar system. Reid Pierce Lincoln Jr. High Bentonville, Arkansas

The Space Around Us A quick overview of the solar system Reid Pierce Lincoln Jr. High Bentonville, Arkansas The Universe The Universe is defined as the summation of all particles and energy that exist

### Cosmology Vocabulary

Cosmology Vocabulary Vocabulary Words Terrestrial Planets The Sun Gravity Galaxy Lightyear Axis Comets Kuiper Belt Oort Cloud Meteors AU Nebula Solar System Cosmology Universe Coalescence Jovian Planets

### Cosmic Landscape Introduction Study Notes

Cosmic Landscape Introduction Study Notes About how much bigger in radius is the Sun than the Earth? The ratio of the Sun's radius to the Earth's radius is 1,392,000/12756 = 109.1 How big is an astronomical

### THE SIZE AND STRUCTURE OF THE UNIVERSE

THE SIZE AND STRUCTURE OF THE UNIVERSE when considering the facts in this presentation, keep in mind: Earth s diameter (distance across center at widest point) approximately = 8,000 miles (12,800 kilometers)

### What 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:

### Universe Celestial Object Galaxy Solar System

ASTRONOMY Universe- Includes all known matter (everything). Celestial Object Any object outside or above Earth s atmosphere. Galaxy- A large group (billions) of stars (held together by gravity). Our galaxy

### Chapter 15 & 16 Science Review (PATTERNS IN THE SKY, OUR SOLAR SYSTEM)

Chapter 15 & 16 Science Review (PATTERNS IN THE SKY, OUR SOLAR SYSTEM) The Milky Way the galaxy that contains our solar system Our solar system is a speck in the Milky Way galaxy Pluto is now considered

### Welcome Aboard!! CHANGE OF KOMATSU S OFFICE HOURS. Briefing Welcome to the Cosmic Tour: Some Guide Lines. Lecture 1 Our Place in the Universe

CHANGE OF KOMATSU S OFFICE HOURS (Previous) Tuesdays & Thursdays 3:30 to 4:30 (New) Tuesdays 4:45 to 5:30 Thursdays 3:30 to 4:30 YOURNAME 31AUG Welcome Aboard!! AUSTIN AST 301 YOURNAME 31AUG 2.5 MILLION

### outline 1. in the beginning. The Big Bang 2. galaxies -- different types 3. stars -- life cycle 4. the solar system -- sun and planets

Earth s Place in the Universe outline 1. in the beginning. The Big Bang 2. galaxies -- different types 3. stars -- life cycle 4. the solar system -- sun and planets the big bang the universe is expanding

### Planets, Stars and Galaxies Section 1 Mon. & Weds. 3:35-4:50. Prof. Todd Adams. Welcome! Department of Physics Florida State University

Planets, Stars and Galaxies Section 1 Mon. & Weds. 3:35-4:50 Prof. Todd Adams Welcome! Department of Physics Florida State University Astronomy is the study of objects beyond the Earth s atmosphere and

### Astronomy Universe: all of space and everything in it

Astronomy Universe: all of space and everything in it Most (90%) of the universe is made up of: dark matter: stuff we think is there due to amount of mass we think is there but is not detected by the instruments

### THE UNIVERSE AND THE EARTH

ESO1 THE UNIVERSE AND THE EARTH Unit 1 What is the Universe like? Universe theories Ideas about the Universe: Geocentric theory Aristotle (B.C) and Ptolomy (A.D) Heliocentric theory Copernicus in 1542

### Learning About Our Solar System

Learning About Our Solar System By debbie Routh COPYRIGHT 2004 Mark Twain Media, Inc. ISBN 978-1-58037-876-5 Printing No. 404007-EB Mark Twain Media, Inc., Publishers Distributed by Carson-Dellosa Publishing

### National Aeronautics and Space Administration. Glos. Glossary. of Astronomy. Terms. Related to Galaxies

National Aeronautics and Space Administration Glos of Astronomy Glossary Terms Related to Galaxies Asterism: A pattern formed by stars not recognized as one of the official 88 constellations. Examples

### What 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

### Chapter 1 Lecture. The Cosmic Perspective Seventh Edition. A Modern View of the Universe

Chapter 1 Lecture The Cosmic Perspective Seventh Edition A Modern View of the Universe 1.1 The Scale of the Universe Our goals for learning: What is our place in the universe? How big is the universe?

### The Scale of the Cosmos

The Scale of the Cosmos Scale defined as relative magnitude. Astronomy deals with objects on a vast range of size scales and time scales. Most of these size and time scales are way beyond our every-day

### The Scale of the Cosmos

The Scale of the Cosmos Scale defined as relative magnitude. Astronomy deals with objects on a vast range of size scales and time scales. Most of these size and time scales are way beyond our every-day

### Our Place in the Universe (Chapter 1) The Structure and Size of the Universe

Our Place in the Universe (Chapter 1) The Structure and Size of the Universe Based on Chapter 1 This material will be useful for understanding Chapters 2, 3, and 13 on Years, Seasons, and Months, The Orbits

### CST 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

### The 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

### Plan. Questions? Syllabus; administrative details. Some Definitions. An Idea of Scale

Plan Questions? Syllabus; administrative details Some Definitions An Idea of Scale All material available from http://astroweb.case.edu/ssm/astr101/ which is the primary document for the course (not Canvas).

### The Moon s relationship with Earth The formation of the Moon The surface of the Moon Phases of the Moon Travelling to the Moon

The Moon The Moon s relationship with Earth The Moon orbits the Earth every 27.3 days. The tides on Earth are caused mostly by the gravitational pull of the Moon and the Sun. The Moon's gravitational pull

### CA Physical Science Benchmark Test 4. 1 A rocket accelerates from the launch pad. The forces on the rocket are

Physical Science enchmark Test 4 Name: ate: 1 rocket accelerates from the launch pad. The forces on the rocket are action forces. balanced. reaction forces. unbalanced. 2 What force(s) act(s) on a rocket

### Unit 2 Lesson 1 What Objects Are Part of the Solar System? Copyright Houghton Mifflin Harcourt Publishing Company

Unit 2 Lesson 1 What Objects Are Part of the Solar System? Florida Benchmarks SC.5.E.5.2 Recognize the major common characteristics of all planets and compare/contrast the properties of inner and outer

### The Universe and Galaxies

The Universe and Galaxies 16.1 http://dingo.care-mail.com/cards/flash/5409/galaxy.swf Universe The sum of all matter and energy that exists, that has ever existed, and that will ever exist. We will focus

### Phys 214. Planets and Life

Phys 214. Planets and Life Dr. Cristina Buzea Department of Physics Room 259 E-mail: cristi@physics.queensu.ca (Please use PHYS214 in e-mail subject) Lecture 6. The Structure and Scale of the Universe

### Space Cruise & Picture Book

Space Cruise & Picture Book Learning Target: Recognize that there are enormous distances between objects in space Apply our knowledge of light and space travel to understand this distance. Watch Powers

### Dark Sky Observing Preview. BSA Troop 4 Pasadena, CA

Dark Sky Observing Preview BSA Troop 4 Pasadena, CA Topics Finding Dark sky Observing etiquette Observing basics Things to see Resources Finding Dark Sky To see faint objects, you want the darkest sky

### Earth in Space. Stars, Galaxies, and the Universe

Earth in Space Stars, Galaxies, and the Universe Key Concepts What are stars? How does the Sun compare to other stars? Where is Earth located in the universe? How is the universe structured? What do you

### Chapter 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

### One with the Cosmos. A short tour out your backdoor. Shane L. Larson Department of Physics Utah State University

One with the Cosmos A short tour out your backdoor Shane L. Larson Department of Physics Utah State University s.larson@usu.edu Senior University Utah State 24 September 2008 1 Storyline Seeing the Cosmos

### * Pre-Unit Assessment Solar System 5-PS2-1, MS-ESS1-2, MS-ESS1-3. Earth, Moon, Sun System K-PS3-1, 1-ESS1-1, 1-ESS1-2

* Pre-Unit Assessment Solar System 5-PS2-1, MS-ESS1-2, MS-ESS1-3 Reading and Map Solar System Chart Solar System Size Comparison Model Earth, Moon, Sun System K-PS3-1, 1-ESS1-1, 1-ESS1-2 Reading and Diagram

### Unit 6 Lesson 4 What Are the Planets in Our Solar System? Copyright Houghton Mifflin Harcourt Publishing Company

Unit 6 Lesson 4 What Are the Planets in Our Solar System? What other objects are near Earth in this part of space? Earth and millions of other objects make up our solar system. In Our Corner of Space A

### Test 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

### The Evening Sky in February 2019

The Evening Sky in February 2019 Sirius and Canopus are the brightest in the evening sky. Sirius, the brightest of all the stars, is north of overhead. Canopus, the second brightest star, is a bit south

### Bell Ringer. want to do someday? 1. Briefly describe the Doppler effect in one sentence. 2. What do you want to do someday, like, in life?

Bell Ringer 1. Briefly describe the Doppler effect in one sentence. 2. What do you want to do someday, like, in life? 3. How do you think science might apply to what you want to do someday? SCIENCE MATTERS

### STARS. THE LIGHT BILLIONS of MILES AWAY

STARS THE LIGHT BILLIONS of MILES AWAY Sit back and enjoy the stars! They're BRIGHT!!!!!!!!!!!!!!!!!!!!! THE BIGGEST STAR IN OUR GALAXY Some people think that the stars in our galaxy are right outside

### and Universe Awareness

Brought to you by s Chandra X-ray Observatory and Universe wareness Light Looking up at the night sky, you might think that space is dull, with lots of black, some white dots and just a hint of red if

### Life Cycle of a Star - Activities

Name: Class Period: Life Cycle of a Star - Activities A STAR IS BORN STAGES COMMON TO ALL STARS All stars start as a nebula. A nebula is a large cloud of gas and dust. Gravity can pull some of the gas

### Star Systems and Galaxies

Star Systems and Galaxies Why Does the Milky Way Look Hazy? 1. Using a pencil, carefully poke at least 20 holes close together in a sheet of white paper. 2. Tape the paper to a chalkboard or dark-colored

### Big Bang, Black Holes, No Math

ASTR/PHYS 109 Dr. David Toback Lectures 2 & 3 1 Prep For Today (is now due) L3 Reading (If you haven t already): Required: BBBHNM: Chapter 1-4 Recommended: (BHOT: Chap. 1-3, SHU: Chap. 1-2, TOE: Chap.

### Galaxies and the Solar System

Galaxies and the Solar System by Lynn Durrant 1 10 tips for learning success Be independent and responsible for your own learning. Work collaboratively in pairs or groups. Use different strategies to help

### Galaxies: enormous collections of gases, dust and stars held together by gravity Our galaxy is called the milky way

Celestial bodies are all of the natural objects in space ex. stars moons, planets, comets etc. Star: celestial body of hot gas that gives off light and heat the closest star to earth is the sun Planet:

### Galaxies and the Universe

Standard 7.3.1: Recognize and describe that the Sun is a medium-sized star located near the edge of a diskshaped galaxy of stars and that the universe contains many billions of galaxies and each galaxy

### Science 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

### Beyond 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

### known since prehistoric times almost 10 times larger than Jupiter

Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune 40.329407-74.667345 Sun Mercury Length of rotation Temperature at surface 8 official planets large number of smaller objects including Pluto, asteroids,

### Chapter 24. Stars, Galaxies & the Universe. Distance units

Chapter 24 Stars, Galaxies & the Universe Distance units To talk about space we need to come up with distance units a little more appropriate than just miles. Otherwise it would be like measuring from

### Writing very large numbers

19.1 Tools of Astronomers Frequently in the news we hear about discoveries that involve space. Since the 1970s, space probes have been sent to all of the planets in the solar system and we have seen them

### Our Solar System. Lesson 5. Distances Between the Sun and the Planets

Our Solar System Lesson 5 T he Solar System consists of the Sun, the Moon, planets, dwarf planets, asteroids, comets, meteors and other celestial bodies. All these celestial bodies are bound to the Sun

### UNIT 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,

### Measuring Distances in Space

Measuring Distances in Space Textbook pages 396 405 Section 11.3 Summary Before You Read Looking at stars is like looking into the past. What might be the reason why? Record your thoughts on the lines

### Name: Earth and Space Assessment Study Guide. Assessment Date : Term Rotation Revolution

Name: Earth and Space Assessment Study Guide Assessment Date : Earth s Rotation and Revolution Term Rotation Revolution Brief Definition Earth s Time to Complete One complete spin on an axis 24 hours (or

### INTRODUCTION TO STARS,

ASTR& 115: STARS, GALAXIES, AND THE COSMOS This work is a derivative of the Astronomy textbook by OpenStax, licensed under CC BY 4.0. Except where otherwise noted, this work is licensed under CC BY 4.0

### Opaque Atmosphere. Astronomy 210. Question. Why would it be useful to place telescopes in. Section 1 MWF Astronomy Building. space?

Astronomy 210 Section 1 MWF 1500-1550 134 Astronomy Building This Class (Lecture 15): The Solar System: Overview HW #4 due on Friday! Next Class: Turn in the Betelgeuse observation! Planet Properties Music:

### WHAT WE KNOW. Scientists observe that every object in the universe is moving away from each other. Objects furthest away are moving the fastest. So..

ASTRONOMY THE BIG BANG THEORY WHAT WE KNOW Scientists observe that every object in the universe is moving away from each other. Objects furthest away are moving the fastest. So.. WHAT DOES THIS MEAN? If

### Kitt Peak Nightly Observing Program

Kitt Peak Nightly Observing Program Splendors of the Universe on YOUR Night! Many pictures are links to larger versions. Click here for the Best images of the OTOP Gallery and more information. M17 Swan

### Assignment #12 The Milky Way

Name Date Class Assignment #12 The Milky Way For thousands of years people assumed that the stars they saw at night were the entire universe. Even after telescopes had been invented, the concept of a galaxy

### Figure 19.19: HST photo called Hubble Deep Field.

19.3 Galaxies and the Universe Early civilizations thought that Earth was the center of the universe. In the sixteenth century, we became aware that Earth is a small planet orbiting a medium-sized star.