Gian Cassini Biography Sources

Porter, Roy. The Cambridge History of Science Volume IV. The Pitt Building, Trumpington Street, Cambridge, United Kingdom: The Press Syndicate of the University of Cambridge, 2003.

"Giovanni Domenico Cassini." Wikipedia, the Free Encyclopedia. Web. 30 Sept. 2011. http://en.wikipedia.org/wiki/Giovanni_Domenico_Cassini.


Westfall, Richard. The Galileo Project. 1995. Department of History and Philosophy of Science, Indian University. October 14, 2009


"Cassini Biography." Web. 30 Sept. 2011. http://www.gap-system.org/~history/Biographies/Cassini.html.

APOD 1.5

This is an image of the Northern Lights, or Aurora Borealis, found in Norway. These lights came about as the result of a coronal mass ejection, a type of solar storm, impacting the magnetosphere and causing solar storms. The aurora borialis is a widely known example of the beauty of our universe. I would love to one day be able to travel and see it.

APOD 1.4

This image shows our very own Sun, the closest star to earth. Captured in two thousand and two, this image is one of the sharpest pictures of the sun ever taken. It shows a dark sunspot, which is currently visible with an unaided observation from Earth.

APOD 1.3

This image, which was featured on January 21, 2007, depicts the Sombrero Galaxy, a large, ring-shaped galaxy located in the Virgo cluster. The Sombrero galaxy, sitting at a distant twenty-eight million light years away and fifty thousand across, contains a large amount of interstellar dust in the middle, which is noticeable in the infrared light of the picture. 

APOD 1.2

This image describes a highly unusual star, which was initially cataloged by the Sloan Digital Sky Survey. The article reports that, according to current understanding of star composition, this star should not exist; it has far less "heavy" elements than are expected, and is comprised mostly of Hydrogen and Helium. One possible explanation given in the article is that the "fragile primordial lithium" in the star's core was destroyed.

APOD 1.1

The subject of this image, featured on November 30, 2006, is the Pelican Nebula. Taken by the Samuel Oschin telescope at Palomar Observatory, this photograph shows the distant Pelican Nebula, about two thousand light-years away, within the constellation Cygnus, the Swan (hence the title of the image, A Pelican in the Swan).