PBS
Pbs: People and Discoveries: Edwin Hubble
Part of the PBS website, an article documenting the life and work of Edwin Hubble.
Other
Observatorio Arval: Carl Sagan
This is biographical information, uuotes, a bibliography and links to other resources on the popular American physicist Carl Sagan.
Other
Observatorio Arval: Clyde Tombaugh
This is a biography page for the American astronomer and discoverer of Pluto, Clyde Tombaugh.
Other
University of Cambridge: Tycho Brahe
The Department of History and Philosophy of Science at Cambridge University provides biographical information on Tycho Brahe, the most famous obervational astronomer of the sixteenth century.
Wolfram Research
Wolfram Science World: Edmond Halley (1656 1742)
A brief biography of the English astronomer, Edmond Halley.
Other
Sky Server: Types of Stars
SkyServer of the Sloan Digital Sky Survey shows you the different types of stars as well as how to classify and identify them.
Other
University of Tasmania: Martin George
Presents a brief profile of Mr. Martin George, a physicist who currently works as the curator of astronomy and assistant director of the Queen Victoria Museum in Launceston, Tasmania.
Other
The Ptolemaic Model of the Planetary System
An easy-to-read description and history of Ptolemy's geocentric model of the universe. Geocentric means that Ptolemy believed the Earth was the center of the universe.
Other
Nineplanets: Reflections on a Mote of Dust.
This site from Nineplanets provides an excerpt of a speech delivered by Carl Sagan, entitled, "Reflections on a Mote of Dust".
Other
Nine planets.org: Ptolemy
This site from the University of Arizona provides a background of Ptolemy's profound influence in the areas of astronomy, geography, and cartography. Includes good pictures and related links.
NBC
Archaeologists Identify Copernicus? Skull
Archaeologists believe that they have found the skull of Nicolaus Copernicus. A portrait is provided for how he was believed to have appeared and information is offered regarding how the procedure was conducted.
Science4Fun
Science4 Fun: Galileo Galilei
Brief biographical sketch of Galileo Galilei, famous scientist and astronomer whose discoveries include the Tower of Pisa Experiment and the Galilean Telescope.
Robin Chew
Lucid Cafe: Sir Isaac Newton
The notable English scientist and mathematician Sir Isaac Newton lived from 1642-1727. This site is a brief biography.
Mocomi & Anibrain Digital Technologies
Mocomi: Sir Isaac Newton Biography
Interesting biographical information and achievements of Sir Isaac Newton, famous physicist, astronomer, mathematician, and philosopher.
Mocomi & Anibrain Digital Technologies
Mocomi: Galileo Galilei Biography
Discover interesting fun facts about the life of Galileo Galilei, Italian astronomer, mathematician, and physicist.