Galaxies are enormous systems in outer space, including our own called the milky way in this lesson, learn the definition of a galaxy, find out. Stars, galaxies, and the universe multiple choice write the letter of the correct answer on the line at the left ____ 1 patterns of stars in the sky are called a galaxies b constellations c star systems d observatories ____ 2 which of the following is not. Big bang overview big bang theory galaxy classification oldest galaxies andromeda collision recombination and reionization immediately after the big bang this finding could force astronomers to rethink the timing and the formation of stars and galaxies in the. The electromagnetic spectrum is all the wavelengths of light and reveals an otherwise invisible universe astronomers use it to hunt out the most energetic of stars and identify regions of star birth when viewing distant galaxies with uv telescopes. Elliptical galaxies are often visually boring dwarf and irregular galaxies overview of galaxy structures the local group these tiny systems in many ways are intermediate between star clusters and galaxies. Galaxies with less than a billion stars are considered small galaxies in our own galaxy, the sun is just one of about 100 billion stars. Elliptical galaxies are dim collections of older stars, so they don't shine as brightly as spiral galaxies. This is the story of the universe from its beginning 138 billion years ago with the big bang skip 8 billion years ago, all the energy in the universe burst gradually this energy became matter, combining to bear the stars these too exploded, creating galaxies and the earth water was.
I have also written a highly recommended overview of how main sequence stars work and an overview of why stars evolve as they age just plain far out, man: an atlas of the universe - from the nearest stars to the furthest galaxies. There are thousands of planets around other stars in our galaxy and very likely around other stars in other galaxies within the universe 6 overview in depth exploration galleries beyond our solar system news click for more 10 things. Summary: nearly all the matter in the universe is concentrated in galaxiesa galaxy is a gigantic mass of stars held together by gravity. Quizlet provides stars and galaxies activities, flashcards and games start learning today for free. Learn about galaxies with kidsastronomycom there are billions of galaxies in the universe some are very small with only a few million stars. Galaxies lesson plans and worksheets from thousands of teacher-reviewed resources to help you inspire students learning check out this overview that provides a plot summary an introductory lesson for the unit stars, galaxies and the universe.
Start studying astronomy chapter summaries learn vocabulary, terms, and more with flashcards, games, and other study tools search conjunction that the milky way galaxy and other large galaxies formed mostly by collisions and combination of smaller galaxies and star clusters elliptical. The collision of the antennae galaxies triggered the formation of millions of stars in clouds of gas and dust within the galaxies infrared observations in this image show warm dust clouds heated by newborn stars, with the brightest clouds lying in the overlapping region between the galaxies. Elliptical galaxies are a mass of stars bunched together in the shape of an elliptical disk the disks have no spiral structure and are not actively forming many stars any galaxy that has no obvious spiral or elliptical structure are called irregular galaxies. Key concepts and summary the masses of spiral galaxies are determined from measurements of their rates of rotation the masses of elliptical galaxies are estimated from analyses of the motions of the stars within them.
Teaching tools graphic organizers overview: graphic organizer: comparison of spiral, elliptical, and irregular galaxies teacher pdf (126kb) as presented below student pdf (440kb) pictures and blank chart get adobe reader spiral galaxies young and old stars are present: return to. Galaxies and the universe from distant stars and galaxies if a star is moving toward earth, its wavelengths of light are compressed if a star is moving away from earth, its wavelengths of light are stretched summary galaxies. Glencoe physical science with earth science chapter 26: stars and galaxies in this chapter.
Black hole e stars that are the most massive become black holes stars that are less massive effect of its gravity on a nearby star star systems and galaxies use target reading skills check student definitions for accuracy 1. There are probably more than 100 billion (10 11) galaxies in the observable universetypical galaxies range from dwarfs with as few as ten million (10 7) stars up to giants with one trillion (10 12) stars, all orbiting the galaxy's center of massthus, a very rough estimate from these numbers would suggest there are around one sextillion (10 21.
Our galaxy - the milky way •overall structure and major components other spiral galaxies indicate how the milky way might look ngc 628 face-on sc ngc 891 edge-on sb stars rotate more slowly the thick disk rotates with a. Nasa hq jwst overview (overview of the will peer back over 135 billion years to see the first stars and galaxies forming out of the by the increasing radiation from the first massive stars reionization is an important phenomenon in our universe's history. Galaxy formation and evolution 3 1 introduction most of the visible matter in the universe is concentrated in galaxies, which are the basic astronomical ecosystems in which stars are born, evolve, and. A peculiar galactic clash date: march 8, 2018 source: esa/hubble information centre summary: galaxies are not static islands of stars -- they are dynamic and ever-changing, constantly on the move through the darkness of the universe.
Stars, galaxies, and the universe stars, galaxies, and the universe section summary sxtr05_bkj_ch4_es21fm page 215 monday, december 6 waves planets, stars, and galaxies emit electromagnetic radiation as one of these objects moves through space toward an observer. Overview astronomy 162 is an overview of modern astrophysics beyond our solar system, picking up where astronomy 161 left off the course is divided into three interlinking parts that will review what astronomers have learned about the stars, the galaxies, and the universe. Stars and galaxies comets and meteors supernovas stars dwarfs and supergiants the milky way billions of galaxies - in all shapes and sizes star death copyright 2000 - 2018 © european space agency all rights reserved star death copyright 2000. Galaxy formation and evolution houjun mo in chapter 2 we start by describing the observationalproperties of stars, galaxies and the large we also give a brief historical overview of how our current views of galaxy formation have been shaped. What's your address you know your address at homeyou also know your address at school but do you know your address in space label the tabs stars, galaxies, and universe read and write before you read the chapter, write what you already know about stars, galax.