Bill Nye, scientist, engineer, comedian, author, and inventor, is a man with a mission: to help foster a scientifically literate society and to help people everywhere understand and appreciate the science that makes our world work. Making science entertaining and accessible is something Bill has been doing most of his life. http://www.billnye.com/The instructuions for building the sundial that Bill references in this lesson can be found here: http://www.planetary.org/explore/projects/earth-dial/instructions.htmlFounded in 1980 by Carl Sagan, Bruce Murray, and Louis Friedman, The Planetary Society has inspired the people of Earth to explore other worlds, understand our own, and seek life elsewhere for over 30 years. http://www.planetary.org/In astronomy, an analemma (from Greek, "pedestal of a sundial") is a curve representing the changing angular offset of a celestial body (usually the Sun) from its mean position on the celestial sphere as viewed from another celestial body (usually the Earth). http://www.analemma.com/NASA's Mars Exploration Rover Mission (MER) is an ongoing robotic space mission involving two rovers, Spirit and Opportunity, exploring the planet Mars. It began in 2003 with the sending of the two rovers—MER-A Spirit and MER-B Opportunity—to explore the Martian surface and geology. http://marsrovers.jpl.nasa.gov/home/index.htmlWake Island Airfield is a military airport located on Wake Island, which is known for the Battle of Wake Island. It is owned by the U.S. Air Force and operated by the Thirteenth Air Force. It serves practically only military purposes within the Wake Island region, yet there is currently little military presence. It can be used for emergency landings of transpacific airliners. http://en.wikipedia.org/wiki/Wake_Island_AirfieldThe Attacks on Wake Island and Pearl Harbor were surprise military strikes conducted by the Imperial Japanese Navy against the United States, on the morning of December 7, 1941 (December 8 in Japan). The attack was intended as a preventative action in order to keep the U. S. Pacific Fleet from interfering with military actions the Empire of Japan was planning in Southeast Asia against overseas territories of the United Kingdom, the Netherlands, and the United States. http://www.youtube.com/watch?v=3VqQAf74fsE