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This paper explores methods used by astronomers to measure the universe, the dual nature of light, origins of the universe and the solar system and types of stars. It also discusses planets and other celestial bodies.
From the Paper:"Another way to measure the universe is using shadows. Some astronomers observe "dark silhouettes cast by distant clusters of galaxies (Glanz,1999)" against the "cosmic microwave background radiation (CMBR) (Glanz, 1999)" The glow from this radiation provides a back light that helps measure the size of the shadows. The CMBR was formed back when the cosmos were only 100,000 to 300,000 years old. Because of the CMBRs' age, "everything in the visible universe lies in front (Glanz, 1999)" of it. When the radiation started out, it had hot temperatures due to the universe just being formed. However, as the universe expanded, the temperatures cooled. This gives astronomers additional information to aid them in their measurements."
Cite this Essay:
Astronomy (2003, February 01) Retrieved June 25, 2019, from https://www.academon.com/essay/astronomy-9394/
"Astronomy" 01 February 2003. Web. 25 June. 2019. <https://www.academon.com/essay/astronomy-9394/>