The Milky Way
The Milky Way
The Milky Way is a spiral galaxy that is estimated to be about 100,000 light-years across. It is also recognized as the “river of spilled milk”. Although for hundreds of years, the Milky Way was thought to be the only galaxy in the universe, it was later proven wrong with evidence. Its spiral arms rotate around the center of the galaxy and within a few billion years, it is thought to collide with another galaxy named Andromeda Galaxy.
Where are we located in the Milky Way?
Our solar system is located on a spiral arm named the Orion Spur. It is thought that if the Earth rotated at the speed of stars in the Milky Way, it would only take three days to orbit the sun instead of 365. ALso, the sun completes an orbit around the center of the galaxy every 240 million years.
Big Bang Theory. Digital image. Http://maggiesscienceconnection.weebly.com/the-big-bang--the-formation-of-the-universe.html. N.p., n.d. Web.
Explore the Universe. Chicago: World Book, 2010. 4-46. Print.
Formation of stars and galaxies. Digital image. N.p., n.d. Web. 7 Dec. 2015. <http://maggiesscienceconnection.weebly.com/the-big-bang--the-formation-of-the-universe.html>.
"Milky Way." Dictionary.com. Dictionary.com, 2015. Web. 07 Dec. 2015.
Milky Way. Digital image. SciTechDaily. N.p., 2015. Web. 7 Dec. 2015. <http://scitechdaily.com/study-suggests-andromeda-crashed-into-the-milky-way-10-billion-years-ago/>.
Redd, Nola Taylor. "Milky Way Galaxy." Space.com. N.p., 22 Feb. 2013. Web. 07 Dec. 2015. <http://www.space.com/19915-milky-way-galaxy.html>.
"Stars of the Milky Way." STARS OF THE MILKY WAY. N.p., n.d. Web. 7 Dec. 2015. <http://kvmagruder.net/bcp/galaxies/milky/>.
Stille, Darlene R. The Milky Way. Chicago: World Book, 2010. 6-22. Print.
Sun location. Digital image. Earthsky Communication Inc., 2015. Web. 7 Dec. 2015. <http://earthsky.org/astronomy-essentials/will-earth-pass-through-galactic-plane-in-2012>.
"10 Incredible Facts about the Galaxy." YouTube. YouTube, 22 May 2014. Web. 7 Dec. 2015. <https://www.youtube.com/watch?v=oWKJAmOIZlQ>.