Milky Way
• The Milky Way Galaxy has:
– A center – A central bulge– 5 arms
spiraling around the central bulge
– We live on
the Orion arm
We can’t see through the center, so we don’t really know what is here
http://www.discoverykids.ca/shows/zula/http://www.astro.wisc.edu/~flack/images/milkyway.jpg
But what is the Milky Way Galaxy?
• Made up of stars and suns
• Planets, moons, and planetoids
• Comets and asteroidshttp://www.discoverykids.ca/shows/zula/
http://www.nss.org/PlanetsNASA.jpghttp://www.solstation.com/stars/sol1.jpg
http://wmatem.eis.uva.es/~marsan/discover/comets/comet-west.gifhttp://www.phys.ncku.edu.tw/~astrolab/mirrors/apod/image/0206/idadactyl_galileo.jpg
We are not alone!
• The Milky Way is only one galaxy of many more galaxies – more galaxies than
you could count even if you started today!
• Galaxies come in different shapes and sizes
http://www.spacetelescope.org/images/screen/opo0428b.jpghttp://www.discoverykids.ca/shows/zula/
Other Galaxies
• They can look more like our galaxy
• Or blurry• Or really weird!
http://www.kidsfirst.org/addenda/uploaded_images/ZP-cast-on-planet-791428.jpghttp://www.hdwallpapers.com/photo/albums/Space_pictures/Spiral_Galaxy_M81.jpg
http://www.cartage.org.lb/en/themes/Sciences/Astronomy/TheGalaxies/Galaxies/EllipticalGalaxies/m87.gifhttp://www.discoverykids.ca/shows/zula/
http://www.ing.iac.es/PR/AR2000/ugc10214.jpg
Tadpole Galaxy
Milky Way Galaxy
• Our galaxy shape is a barred spiral galaxy
http://www.kidsfirst.org/addenda/uploaded_images/ZP-cast-on-planet-791428.jpghttp://www.geocities.com/attunement.geo/milky_way_barred_spiral_galaxy_spitzer.jpg
Barred
Spiral
Why is it called the Milky Way?• The Milky Way galaxy got its name because we can
see some parts of it at night, and it looks like a big band of milky white light.
• But there are other stories and thoughts about how our galaxy came about…
http://en.wikipedia.org/wiki/File:Deathvalleysky_nps_big.jpg
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