The Earth In Space
Shelby Cook
4th Hour
A) Our solar system is known as the Milky way galaxy and includes the Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was downgraded and is no longer considered a planet. Each of the planets orbits around the sun in an orbit. An orbit is an elliptical path that a planet takes around the Sun. The Sun makes up around 99.85% of the mass in our solar system. Our galaxy also consists of an Asteroid Belt located between Mars and Jupiter. The inner four planets of the solar system are smaller in size, and have rocky surfaces. The outer four planets are considered the gas giants of the solar system, and are enormous in size and only have a solid core. The earth is 13.7 billion years old.
Shelby Cook
4th Hour
A) Our solar system is known as the Milky way galaxy and includes the Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto was downgraded and is no longer considered a planet. Each of the planets orbits around the sun in an orbit. An orbit is an elliptical path that a planet takes around the Sun. The Sun makes up around 99.85% of the mass in our solar system. Our galaxy also consists of an Asteroid Belt located between Mars and Jupiter. The inner four planets of the solar system are smaller in size, and have rocky surfaces. The outer four planets are considered the gas giants of the solar system, and are enormous in size and only have a solid core. The earth is 13.7 billion years old.
B) About fifteen million years ago a huge explosion started the expansion of the universe. People Called it the BIG BANG! They say it was an event that filled the universe with what we know today. The origin of the big bang theory came from Edwin Hubble. Who said our universe continues to expand. He discovered that a galaxy’s velocity is proportional to its distance. If a planet it two times away from us it spins two times faster.
C) The Cosmic Microwaves tell us a lot about how old the earth is. In the picture below the grey is a spotty pattern of microwaves emitted from the early universe. Sound waves take time to generate such a pattern which leads to the knowledge of our earth being 13.7 billion years old.
Question A Cites (mla) Hamilton, Calvin. "The Solar System." Views of the Solar System. 1995. Web. 24 Nov 2009.
Calvin, George. “just how big.” The solar System. 2003. Web 24 2009.
Question B Cites (mla) Kaufmann, William. "The Big Bang." Big bang Theory 1.1 (1994): 1. Web. 24 Nov 2009.
Abstook, Kenneth. “Theories.”Big bang (2003):1. Web. 24 Nove 2009. http://www.forcld.edu/bigbang7965.htm.
Question C Cites (mla) nemiroff, Robert. "Astronomy Picture of the day." UNiverse age from Microwave Background (2009): n. pag. Web. 24 Nov 2009.
Scott, Douglas. "Cosmic microwave Background." big bang (2000): n. pag. Web. 24 Nov 2009.
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