galactic universe
DESCRIPTION
GALACTIC UNIVERSE. What is a Galaxy?. It is a group of billions and billions of stars held together by gravity. Spiral Galaxy. Bulge. Disk. Side View. Top View. Huge; contains stars, gas, and dust Held together by gravity Pinwheel shape/looks like a hurricane Bulge and thin disk - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/1.jpg)
![Page 2: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/2.jpg)
It is a group of billions and billions
of stars held together by gravity.
What is a Galaxy?
![Page 3: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/3.jpg)
Top View
• Huge; contains stars, gas, and dust• Held together by gravity• Pinwheel shape/looks like a hurricane• Bulge and thin disk• Halo (glow) is present• Rich in gas and dust• Young and old stars are present
Side View
Bulge
Disk
Spiral Galaxy
![Page 4: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/4.jpg)
Spiral Galaxy
![Page 5: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/5.jpg)
Spiral Galaxy
![Page 6: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/6.jpg)
Spiral Galaxy
![Page 7: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/7.jpg)
Spiral Galaxy
![Page 8: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/8.jpg)
Elliptical Galaxy
•Huge; contains stars, gas, and dust
•Held together by gravity•Round to oval•Bulge but no disk•Halo is present•Little cool gas and dust•Mainly OLD STARS are present
![Page 9: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/9.jpg)
Elliptical Galaxy
![Page 10: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/10.jpg)
Elliptical Galaxy
![Page 11: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/11.jpg)
Elliptical Galaxy
![Page 12: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/12.jpg)
Elliptical Galaxy
![Page 13: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/13.jpg)
Irregular Galaxy
• Huge; contains stars, gas, and dust
• Held together by gravity• No regular shape• May show signs of a disk and/or bulge
• Halo is present• Usually rich in gas and dust• Young and old stars are present
![Page 14: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/14.jpg)
Irregular Galaxy
![Page 15: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/15.jpg)
Irregular Galaxy
![Page 16: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/16.jpg)
Irregular Galaxy
![Page 17: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/17.jpg)
Nebulae
Planetary Nebula
(death of a star)
Movie
Stellar Nebula (where stars are
born)
![Page 18: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/18.jpg)
Stellar Nebula
![Page 19: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/19.jpg)
Stellar Nebula
![Page 20: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/20.jpg)
Stellar Nebula
![Page 21: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/21.jpg)
Stellar Nebula
![Page 22: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/22.jpg)
Planetary Nebula
![Page 23: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/23.jpg)
Planetary Nebula
![Page 24: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/24.jpg)
Planetary Nebula
![Page 25: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/25.jpg)
Planetary Nebula
![Page 26: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/26.jpg)
Colliding Galaxies
![Page 27: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/27.jpg)
![Page 28: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/28.jpg)
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![Page 30: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/30.jpg)
![Page 31: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/31.jpg)
Betelgeuse
Rigel
Orion Constellation
![Page 32: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/32.jpg)
![Page 33: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/33.jpg)
![Page 34: GALACTIC UNIVERSE](https://reader035.vdocuments.mx/reader035/viewer/2022062305/56815b56550346895dc937c4/html5/thumbnails/34.jpg)
Supernovae