Galaxy expansion Study guides, Class notes & Summaries

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...

The Cosmic Perspective, 7th Edition, Testbank | 2022 latest update 1 Copyright © 2014 Pearson Education, Inc. The Cosmic Perspective, 7e (Bennett et al.) Chapter 1 A Modern View of the Universe 1.1 Multiple-Choice Questions 1) What is the meaning of the word cosmos? A) the origin of Earth and life upon it B) the light from a distant astronomical object C) the Milky Way D) the sum total of all matter and energy, that is, everything within and between all galaxies E) the dark sky Ans...

ASTRO 7N - UNIT 4 PART 2 (quiz)What parameters do Hubble's law relate to each other? - correct answer galaxy recession velocity and distance What technique for measuring distance can you use to discover Hubble's law? - correct answer Cepheid variables in galaxies white dwarf supernovae in galaxies A&B How do you measure the speed of a galaxy relative to you? - correct answer Doppler shifts What is Hubble's law? - correct answer The faster a galaxy is moving, the farther away it is...

The radio lobes that flank some radio galaxies produce mainly - synchrotron radiation. The fact that many radio lobes emit more intensely from the side away from the galaxy suggests that - they are created by jets from the galaxy. The central galaxy in a double-lobed radio source is usually - a giant elliptical galaxy. The hot gas of a radio lobe could be held together by - collision with the intergalactic medium. Head-tail galaxies are - a, b and c. If the red shifts of quasars arise f...

ASTRO 7N - UNIT 4 PART 2 (quiz)What parameters do Hubble's law relate to each other? - correct answer galaxy recession velocity and distance What technique for measuring distance can you use to discover Hubble's law? - correct answer Cepheid variables in galaxies white dwarf supernovae in galaxies A&B How do you measure the speed of a galaxy relative to you? - correct answer Doppler shifts What is Hubble's law? - correct answer The faster a galaxy is moving, the farther away it is...

Ast 104 Final Exam Study Guide Exam 2023 The science of the universe as a whole is called: a) proctology. b) universology. c) cosmetology. d) inflation. e) cosmology. - Answer-e The Big Bang is: a) the explosion of a supernova. b) the explosion of a star. c) a theoretical origin of the universe or our pocket universe. d) the explosion of a quasar. e) a theoretical end of the universe or our pocket universe. - Answer-c Given v as recession velocity and r as cosmological p...

ASTRON final exam Questions and answers, VERIFIED. Ch 17- What do we use medthods of stand candles? - -Astronomers cannot use parallax to measure vast distances because the angle by which the galaxy's position changes as we move around the sun is too tiny to be detected, so astronomers must use this method to find distance How do we use standard candles? - -if we know the luminosity we can use the inverse-square law to deduce its distance from how bright it looks to us Cepheids - -ar...

Space tools and Formation of the universe Exam Questions with 100% Correct Answers telescope A device built to observe distant objects by making them appear closer satellite An object that revolves around another object in space space shuttle a spacecraft that can carry a crew into space, return to Earth, and then be reused for the same purpose space station a large artificial satellite on which people can live and work for long periods space probe a spacecraft that has...

ASTRO 7N - UNIT 4 PART 2 (quiz) Questions with complete solution 2024ASTRO 7N - UNIT 4 PART 2 (quiz) What parameters do Hubble's law relate to each other? - correct answer galaxy recession velocity and distance What technique for measuring distance can you use to discover Hubble's law? - correct answer Cepheid variables in galaxies white dwarf supernovae in galaxies A&B How do you measure the speed of a galaxy relative to you? - correct answer Doppler shifts What is Hubble's ...

How many stars does the Milky Way Galaxy have? More than 100 billion Local Group A collection of galaxies. The milky way shares a local group with 40 other galaxies Galaxy clusters groups of galaxies with more than a few dozen members. superclusters regions in which galaxies and galaxy clusters are most tightly packed. (essentially clusters of galaxy clusters) average distance between galaxies is ____ with time increasing do individual galaxies and galaxy ...