Op-Ed in the New York Times by Brian Greene
Information on the probe and its data collection activities.
From the American institute of Physics' "Ideas of Cosmology" series. Historical information about the Theories of a Static Universe.
From NASA, a discussion on the age of the Universe and the Big Bang Theory.
An alphabetical glossary of relevant scientific terms.
The original paper (Reflections on the Motive Power of Fire and on Machines Fitted to Develop that Power) by Sadi Carnot, in French.
Clausius' original text, On the Moving Force of Heat, and the Laws regarding the Nature of Heat itself which are deducible therefrom, courtesy of the Biodiversity Heritage Library.
From the University of Nebraska, Lincoln, an animation of how the Doppler effect works.
From the University of Nebraska, Lincoln, an interactive animation of redshift.