Percival+Lowell

**Percival** **Lawrence Lowell** **(March 13, 1855 - November 12, 1916) **
 * Edited by: Loan Tran, Fall 2012 **

Introduction
Percival Lowell was an American astronomer who predicted the existence of a planet beyond Neptune and formed the beginning of the effort that led to the discovery of Pluto. In fact, the choice of the name of Pluto and element symbol, PL, were influenced by his initials. However, he may be best remembered as a major supporter that there were canals on Mars used for the purpose of irrigation. He also had other endeavors such as a businessman, author, and mathematician. The Lowell Observatory in Flagstaff, Arizona, was founded and named after him.



=Pluto: The Discovery of Planet X= http://www.discoveryofpluto.com/pluto04.html ==
 * **Author:** Brad Mager
 * **Last Updated:** Unknown
 * **Date Reviewed:** November 30, 2012
 * **Reviewed by:** Loan Tran
 * **Accuracy:** The information seems accurate and up to date. I did not find any facts which contradict the information from other sources.
 * **Readability and Clarity:** The audience seems to be targeted to adult readers and is appropriately written for them. The author published a book about this topic, and this website is an online version of it.
 * **Ease of Navigation:** Very easy to navigate and is broken up into individual links for the different chapters and topics.

=Percival Lowell= http://www.bbc.co.uk/science/space/solarsystem/scientists/percival_lowell
 * **Author:** BBC
 * **Last Updated:** 2012
 * **Date Reviewed:** November 30, 2012
 * **Reviewed by:** Loan Tran
 * **Accuracy:** The information seems accurate and up to date. I did not find any facts which contradict the information from other sources.
 * **Readability and Clarity:** The audience seems to be targeted to young adult to adult readers and is appropriately written for them. This webpage also contains video clips from other programs that was about Percival Lowell.
 * **Ease of Navigation:** Very easy to navigate, with many pictures. The website contains other links to different features that the BBC contains, such as news, weather, sports, etc.

=Percival Lowel: Biography= http://www.biography.com/people/percival-lowell-9387596 ==
 * **Author:** Bio.com
 * **Last Updated:** 2012
 * **Date Reviewed:** November 30, 2012
 * **Reviewed by:** Loan Tran
 * **Accuracy:** The information on this webpage is brief and does not have a lot of information. There is one fact that contradicts other information, his date of death. This webpage has it as October 12, other sources of information has it as November 12.
 * **Readability and Clarity:** The audience seems to be targeted to adult readers and is appropriately written for them. This webpage also contains many advertisements.
 * **Ease of Navigation:** Very easy to navigate, with many pictures, and other links to different biographies of other people.

=Percival Lowell (American Astronomer)= http://www.britannica.com/EBchecked/topic/349831/Percival-Lowell
 * **Author:** Encyclopedia Britannica
 * **Last Updated:** 2012
 * **Date Reviewed:** November 30, 2012
 * **Reviewed by:** Loan Tran
 * **Accuracy:** The information seems accurate and up to date. I did not find any facts which contradict information from other sources.
 * **Readability and Clarity:** The audience seems to be targeted to adult readers and is appropriately written for them. This webpage also contains many advertisements.
 * **Ease of Navigation:** Very easy to navigate, with many pictures, and other links to different subjects of interest.

=Lowell, Percival (1855 - 1916)= http://www.daviddarling.info/encyclopedia/L/LowellP.html
 * **Author:** David Darling
 * **Last Updated:** 2012
 * **Date Reviewed:** November 30, 2012
 * **Reviewed by:** Loan Tran
 * **Accuracy:** The information seems accurate and up to date. I did not find any facts which contradict information from other sources.
 * **Readability and Clarity:** The audience seems to be targeted to adult readers and is appropriately written for them. This webpage also contains many advertisements.
 * **Ease of Navigation:** Very easy to navigate, with many pictures, and other links to different topics besides science, such as technology, mathematics, philosophy. The author calls it the Encyclopedia of Science.