I Have a Theory

1423 Words Oct 7th, 2014 6 Pages
I Have A Theory
The study of the universe as a whole is Cosmology. Although easy to label, it is not easy to explain. The foundation of modern cosmology can be described as an arrangement of observations, hypotheses, theories using science, technology, mathematics, physics, and analytics (to name a few) to strive for answers about our beginning, present, and future.
Through time, many types of people have created stories, myths, and ideas of how we came to be. Until the nineteenth and twentieth century, the evolution of theories was slow. According to Shipper, “New telescopic devices permitting people to see parts of the universe never before imagined, in new ways never before conceived, have advanced man's theoretical capabilities on
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One of the most recent measurements Hubble Law
 V= H o D( V is the velocity of a receding galaxy in km/sec. D is the distance away in Mpc and Ho is called the Hubble Constant with units of km/sec/Mpc)

the Hubble constant is 67 ± 5 km/s/Mpc, measured by the 2dF Galaxy Redshift Survey (Slade, n.d.). The Hubble constant is a measure of the velocity of this observed expansion; in addition, there is also evidence at a slight acceleration that has been detected. According to Slade, “As more data comes in and technology 3 improves these measurements are quickly converging to similar values” (n.d.). The Milky Way is a spiral galaxy that has three components of visible matter:
(1) the disk (containing the spiral arms)
(2) the halo
(3) the nucleus

Because of the spherical distribution in relation to the center of the galaxy, the halo and the nucleus are also referred to as the spherical component. In addition to these visible components, the galaxy also contains at least three other components that are "invisible": the galactic magnetic field, charged particles trapped in the galactic magnetic field, and dark matter that is of unknown composition but that makes itself felt by its gravitational influence on the visible matter. We are still unclear about dark matter but we can detect its presence with telescopes.

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