Bibliography
Books:
Sobel, Dava.
The Planets
. New York: Penguin Group. 2005. ISBN 0-670-03446-0.
Beatty, J. Kelly.
Exploring the Solar System: Other Worlds
. Washington, DC: National Geographic. 2001. ISBN 0-7922-7878-X.
Corfield, Richard.
Lives of the Planets: A Natural History of the Solar System
. New York: Basic Books. 2007. ISBN-13: 978-0-465-01403-3.
Benson, Michael.
Beyond: A Solar System Voyage
. New York: Abrams Books. 2009. ISBN 978-0-8109-8322-9.
Hardy, David & Moore, Patrick.
Futures: 50 Years in Space: The Challenge of the Stars
. New York: HarperCollins. 2004. ISBN 0-06-073038-2.
Krane, Kenneth.
Modern Physics
. Third Edition. Hoboken: John Wiley & Sons, INC. 2012. ISBN 978-1-118-06114-5.
Websites:
http://www.messenger-education.org/elusive_planet/ancient_cultures_2.php
http://piecubed.co.uk/vulcan-planet-mercury-sun/
http://solarviews.com/eng/hypothet.htm#vulcan
http://www.armaghplanet.com/blog/vulcan-the-solar-systems-ghost-planet.html
http://www.guide-to-the-universe.com/planet-vulcan.html
http://news.nationalgeographic.com/2015/11/151104-newton-einstein-gravity-vulcan-planets-mercury-astronomy-theory-of-relativity-ngbooktalk/
http://nineplanets.org/hypo.html#vulcan
http://www.uh.edu/engines/epi1963.htm
http://www.spaceanswers.com/solar-system/could-there-be-another-planet-between-mercury-and-the-sun/
http://io9.com/the-200-year-old-mystery-of-mercurys-orbit-solved-1458642219
http://www.einstein-online.info/elementary/generalRT/planetAstray
https://briankoberlein.com/2014/05/19/einstein-eddington/
https://briankoberlein.com/2013/08/31/span-of-a-heartbeat/
http://archive.ncsa.illinois.edu/Cyberia/NumRel/EinsteinTest.html
http://physics.ucr.edu/~wudka/Physics7/Notes_www/node98.html
http://www.einstein-online.info/home-eo/elementary
http://www.einsteinjahr.de/page_17.html
http://www.space.com/17661-theory-general-relativity.html
http://www.livescience.com/48922-theory-of-relativity-in-real-life.html
https://www.youtube.com/watch?v=hSXNE0pNtr8
TABLE OF CONTENTS:
Introduction
Classical Observations of Mercury
The Planet Vulcan
Einstein and Relativity
Applying Relativity to Mercury's Orbit
Further Applications of Relativity