CCD Images from a Galilean Telescope
- Describes the construction and use of a modern replica of Galileo's telescope. Includes photographs taken through it showing approximately what he would have seen.
- http://www.pacifier.com/~tpope/

Multimedia Catalogue - Room IV Galileo Galilei
- Virtual tour and descriptions of Galilean artifacts on display at the History of Science Museum, Florence, Italy. Includes biographical links and notes.
- http://brunelleschi.imss.fi.it/genindice.asp?appl=SIM&indice=54&xsl=listaspazi&lingua=ENG&chiave=600004

Galileo Galilei - Astronomy Rebel With a Cause
- Concise biography.
- http://space.about.com/cs/astronomerbios/a/galileobio.htm

BBC Online: Galileo
- In-depth look at Galileo's life and his significance.
- http://www.bbc.co.uk/history/historic_figures/galilei_galileo.shtml

Galileo Galilei's Notes on Motion
- High resolution scans of "Manuscript 72" pertaining to the theorems on motion published in the Discorsi.
- http://www.mpiwg-berlin.mpg.de/Galileo_Prototype/

The Life and Work of Galileo (1564-1642)
- A detailed account of Galileo's early influences and summary of important events in his efforts to prove heliocentricity.
- http://www.skyscript.co.uk/galileo.html

Trial of Galileo Galilei
- A collection of primary documents, essays, ancient texts, maps, photos, paintings and other materials relating to the trial in 1633.
- http://www.law.umkc.edu/faculty/projects/ftrials/galileo/galileo.html

Galileo and Einstein
- A resource for a University of Virginia physics course, with lecture notes.
- http://galileoandeinstein.physics.virginia.edu/

Galileo Galilei
- Biography, with links to related internet sites.
- http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Galileo.html

Galileo: Letter to the Grand Duchess Christina
- Galileo's great defense of the independence of science from religious authority.
- http://www.fordham.edu/halsall/mod/galileo-tuscany.html