Galaxies, part 1: Crash Course Astronomy #38
The Milky Way is our neighborhood in the universe.
It’s a galaxy and there are many others out there.
Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular. Galaxies can collide, and grow in size by eating each other.
Crash Course Astronomy Poster:
http://store.dftba.com/products/crashcourse-astronomy-poster
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Table of Contents
Milky Way is a
Galaxy (
One of Many) 2:04
Galaxies Have Four
Main Shapes 3:18
Galaxies Can
Collide 6:05
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PHOTOS/VIDEOS
NGC 5363 http://aftar.uaa.alaska.edu/gallery/details
.cfm?img=316&type;=# [credit:
T.A. Rector (
University of Alaska Anchorage) and H. Schweiker (
WIYN and
NOAO/
AURA/
NSF)]
Panorama of
Spiral Galaxy,
M31 http://www.noao.edu/image_gallery/html/im1259
.html [credit:
Local Group Survey Team and T.A. Rector (University of Alaska Anchorage)]
Animation of a variable star http://www.spacetelescope.org/videos/heic1323j/ [credit:
NASA,
ESA, M. Kornmesser]
Hubble M31 PHAT
Mosaic http://hubblesite.org/newscenter/archive/releases/
2015/02/image/a/ [credit: NASA, ESA, J. Dalcanton,
B.F. Williams, and
L.C. Johnson (University of
Washington), the PHAT team, and R. Gendler]
Elliptical -
Death of giant galaxies spreads from the core https://www.spacetelescope.org/news/heic1508/ [credit: ESA/Hubble & NASA]
Spiral - HUBBLE
VIEW OF BARRED SPIRAL GALAXY MESSIER 83 http://sci.esa.int/hubble/53590-hubble-view-of-barred-spiral-galaxy-messier-83/ [credit: NASA, ESA, and the Hubble
Heritage Team (STScI/AURA). Acknowledgement:
William Blair (
Johns Hopkins University)]
Peculiar -
Colliding galaxies make love, not war https://www.spacetelescope.org/news/heic0615/ [credit: NASA, ESA, and the Hubble Heritage Team STScI/AURA)-ESA/Hubble
Collaboration]
Irregular -
Little Galaxy Explored http://www.nasa.gov/mission_pages/spitzer/multimedia/asmccaption_prt
.htm [credit: NASA/JPL-Caltech/STScI]
Hubble
Image of
Messier 101 http://hubblesite.org/newscenter/archive/releases/2009/07/image/h/ [credit: NASA, ESA, K. Kuntz (
JHU), F. Bresolin (
University of Hawaii), J. Trauger (
Jet Propulsion Lab), J. Mould (NOAO), Y.-H.
Chu (
University of Illinois, Urbana), and STScI]
A poster-size image of the beautiful barred spiral galaxy
NGC 1300 http://www.spacetelescope.org/images/opo0501a/ [credit: NASA, ESA, and The Hubble Heritage Team STScI/AURA)]
NGC 3344 http://skycenter.arizona.edu/gallery/Galaxies/
NGC3344 [credit:
Adam Block/
Mount Lemmon SkyCenter/
University of Arizona]
Flocculent spiral NGC 2841 http://www.spacetelescope.org/news/heic1104/ [credit: NASA, ESA and the Hubble Heritage Team]
Barred Spiral Galaxy NGC1365 https://www.noao.edu/image_gallery/html/im1034.html [credit: SSRO/
PROMPT and NOAO/AURA/NSF]
Magnificent Details in a
Dusty Spiral Galaxy http://hubblesite.org/newscenter/archive/releases/
1999/25/image/a/ [credit: The Hubble Heritage Team]
Panning across
Messier 77 http://www.spacetelescope.org/videos/heic1305b/ [credit: NASA, ESA,
Digitized Sky Survey 2. Acknowledgement: A. van der
Hoeven]
Hubble Mosaic of the
Sombrero Galaxy http://www.spacetelescope.org/images/opo0328a/ [credit: NASA/ESA and The Hubble Heritage Team]
Spiral Galaxy NGC 4565 http://www.eso.org/public/images/eso0525a/ [credit:
ESO]
M87 (with
Jet) http://skycenter.arizona.edu/gallery/Galaxies/M87%28withJet%29 [credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona]
M59, NGC4621 https://www.noao.edu/image_gallery/html/im0579.html [credit: NOAO/AURA/NSF]
Fulldome simulation of colliding galaxies http://www.spacetelescope.org/videos/gal_coll_dome_3800/ [credit: NASA/STScI]
Antennae Galaxies http://www.spacetelescope.org/images/potw1345a/ [credit: ESA/Hubble & NASA]
Terzan 5
Artist’s
Concept http://www.sdss3.org/press/images/20111130.fourtails.streams-3
.jpg [credit:
Amanda Smith,
Institute of Astronomy,
University of Cambridge]
Interacting Galaxy
Pair Arp 87 http://hubblesite.org/newscenter/archive/releases/
2007/36/image/a/ [credit: NASA, ESA, and the Hubble Heritage Team]
Doing cartwheels to celebrate the end of an era http://www.spacetelescope.org/images/potw1036a/ [credit: ESA/Hubble & NASA]
Hoag's Object http://hubblesite.org/newscenter/archive/releases/
2002/21/image/a/ [credit: NASA and The Hubble Heritage Team]
Paranal Nights https://www.eso.org/public/images/potw1401a/ [credit: Y. Beletsky (
LCO)/ESO]
Tarantula Nebula http://www.eso.org/public/images/eso1023a/ [credit:
TRAPPIST/E. Jehin/ESO]
Hubble Ultra Deep Field 2014 http://hubblesite.org/newscenter/archive/releases/2014/27/image/a/ [credit: NASA, ESA]