Galaxies, part 1 
Galaxies, part 1
by Crash Course
Video Lecture 38 of 47
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Date Added: August 11, 2016

Lecture Description

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:


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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NGC 5363 [credit: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOAO/AURA/NSF)]
Panorama of Spiral Galaxy, M31 [credit: Local Group Survey Team and T.A. Rector (University of Alaska Anchorage)]
Animation of a variable star [credit: NASA, ESA, M. Kornmesser]
Hubble M31 PHAT Mosaic [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 [credit: ESA/Hubble & NASA]
Spiral - 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 [credit: NASA, ESA, and the Hubble Heritage Team STScI/AURA)-ESA/Hubble Collaboration]
Irregular - Little Galaxy Explored [credit: NASA/JPL-Caltech/STScI]
Hubble Image of Messier 101 [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 [credit: NASA, ESA, and The Hubble Heritage Team STScI/AURA)]
NGC 3344 [credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona]
Flocculent spiral NGC 2841 [credit: NASA, ESA and the Hubble Heritage Team]
Barred Spiral Galaxy NGC1365 [credit: SSRO/PROMPT and NOAO/AURA/NSF]
Magnificent Details in a Dusty Spiral Galaxy [credit: The Hubble Heritage Team]
Panning across Messier 77 [credit: NASA, ESA, Digitized Sky Survey 2. Acknowledgement: A. van der Hoeven]
Hubble Mosaic of the Sombrero Galaxy [credit: NASA/ESA and The Hubble Heritage Team]
Spiral Galaxy NGC 4565 [credit: ESO]
M87 (with Jet) [credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona]
M59, NGC4621 [credit: NOAO/AURA/NSF]
Fulldome simulation of colliding galaxies [credit: NASA/STScI]
Antennae Galaxies [credit: ESA/Hubble & NASA]
Terzan 5 Artist’s Concept [credit: Amanda Smith, Institute of Astronomy, University of Cambridge]
Interacting Galaxy Pair Arp 87 [credit: NASA, ESA, and the Hubble Heritage Team]
Doing cartwheels to celebrate the end of an era [credit: ESA/Hubble & NASA]
Hoag's Object [credit: NASA and The Hubble Heritage Team]
Paranal Nights [credit: Y. Beletsky (LCO)/ESO]
Tarantula Nebula [credit: TRAPPIST/E. Jehin/ESO]
Hubble Ultra Deep Field 2014 [credit: NASA, ESA]

Course Index

Course Description

In this Crash Course series, marvel at the wonders of astronomy with your host for this intergalactic adventure, the Bad Astronomer himself -- Phil Plait. In just 40 short lessons, you will learn the basics of the oldest science known to humanity.

Be sure to check out links to relevant Photos in the description for each video.


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