Milky way - Study guides, Class notes & Summaries

Disk stars (yellow) population components: Correct Answer-- youngest stars - the Sun - high-mass stars - stars that all orbit in nearly the same plane Halo stars (green) population components: Correct Answer-- oldest stars - globular clusters - stars whose orbits can be inclined at any angle - stars with the smallest abundance of heavy elements In which of the basic regions of the Galaxy is the Sun located? Correct Answer-- galactic disk Which statement best describes the distribu...

How old is the universe? correct answer: 14 billion years old How many kilometers make up a light year? correct answer: 10 trillion kilometers or 10 x 10^12 How many galaxies are present in the Local Group? correct answer: 40 Is there ever a time when we, on the Earth, are not in some type of motion? correct answer: no How far away are the nearest stars, excluding the Sun? correct answer: at least 4 light years away The elements hydrogen and helium were created during the Big...

Test Bank For Astronomy 1st Edition by Andrew Fraknoi 8284, 3 Chapter 1: Science and the Universe: A Brief Tour Chapter 2: Observing the Sky: The Birth of Astronomy Chapter 3: Orbits and Gravity Chapter 4: Earth, Moon, and Sky Chapter 5: Radiation and Spectra Chapter 6: Astronomical Instruments Chapter 7: Other Worlds: An Introduction to the Solar System Chapter 8: Earth as a Planet Chapter 9: Cratered Worlds: The Moon and Mercury Chapter 10: Earthlike Planets: Venu...

Why do disk stars bob up and down as they orbit the galaxy? correct answers because the gravity of other disk stars always pulls them toward the disk Which part of the galaxy has gas with the hottest average temperature? correct answers the halo What is the typical percentage (by mass) of elements other than hydrogen and helium in stars that are forming right now in the vicinity of the Sun? correct answers 2% Where are most of the Milky Way's globular clusters found? correct answers in...

Complete Test Bank for Stars and Galaxies, 10th Edition by Michael A. Seeds ; ISBN13: 9781337399944...(Full Chapters included Chapter 1 to 19)...1. Here and Now. 2. A User's Guide to the Sky. 3. Moon Phases and Eclipses. 4. Origins of Modern Astronomy. 5. Gravity. 6. Light and Telescopes. 7. Atoms and Spectra. 8. The Sun. 9. The Family of Stars. 10. The Interstellar Medium. 11. Formation and Structure of Stars. 12. Stellar Evolution. 13. Deaths of Stars. 14. Neutron Stars and Black...

What are the Milky Way Galaxy's spiral arms? - The spiral arms are places where stars are formed from clouds of gas and dust Where are you in the Universe? If you had to give directions to your location in the Universe, what directions would you give? - We are the third planet away from the Sun. Our Solar System is located in one of the spiral arms of the Milky Way Galaxy, one within the Local Group of galaxies Why do astronomers now label Pluto a "dwarf planet"? - Due to its small size ...

TABLE OF CONTENTS: Preview: The Cosmic Landscape Chapter 1: The Cycles o f the Sky Chapter 2: The Rise of Astronomy Essay 1: Backyard Astronomy Chapter 3: Gravity and Motion Chapter 4: Light and Atoms Essay 2: Special and General Relativity Chapter 5: Telescopes Chapter 6: Earth Chapter 7: The Moon and Tides Essay 3: Keeping Time Chapter 8: The Terrestrial Planets Chapter 9: The Giant Planets Chapter 10: Small Bodies Orbiting the Sun Chapter 11: Planetary Systems Essay 4: Life in the Universe Ch...

Rank the following 4 items by how long it takes for light to reach us from these object, from shortest to longest. The Andromeda Galaxy the center of the Milky Way Pluto Sun. Ans- Sun, Pluto, center of the Milky Way, the Andromeda Galaxy. The current best estimate for the age of the universe is about Ans- 14 billion years. What do astronomers mean when they say the universe is expanding? Ans- Average distances are increasing between most galaxies. Which statement is false? 1. A co...

Astronomy 3 Final Exam Study Guide Questions and Answers 100% Solved Why does the Milky Way galaxy look like a band of light when we view it in the night sky? ️️- Because we are viewing it from inside of it. - Because our galaxy is relatively flat and we are seeing distant stars along its plane. List these following 10 bodies/areas in order from their distance from Earth outward (closest being #1): - Andromeda Galaxy - Alpha Centauri - Large Magellanic Cloud - Quasar 3C 273 - Ju...

he Andromeda Galaxy is faintly visible to the naked eye in the constellation Andromeda. Suppose instead it were located in the same direction in space as the center of the Milky Way Galaxy (but still at its current distance). How would it appear to the eye in that case? a) It would be much brighter because it would be illuminated by the many stars in the center of our galaxy. b)It would look about the same, but it would be harder to pick out because its cloud-like appearance would ma...