'Semimajor axis' presentation slideshows

Optical image of the Milky Way (360 degrees)

Optical image of the Milky Way (360 degrees). Kapteyn (1922). Shapley (1919). COBE near-infrared image of the Milky Way. NGC 891. Magellanic clouds. Fornax dwarf galaxy. Leo I dwarf galaxy. M31 = Andromeda galaxy + NGC 205 + M32 (+ Moon, for scale).

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Lecture 5

Lecture 5. Binary stars. Binary stars. 85% of all stars in the Milky Way are part of multiple systems (binaries, triplets or more) Some are close enough that they are able to transfer matter through tidal forces. These are close or contact binaries. Examples.

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History of Modern Astronomy

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Resonant and Co-orbital Asteroids Associated with Earth

Resonant and Co-orbital Asteroids Associated with Earth. Martin Connors, Athabasca University Kimmo Innanen, York University AGU Spring Meeting, Montreal 2004.

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Aristotle (384-322 B.C.)

Aristotle (384-322 B.C.). http://zebu.uoregon.edu/timages/cosmos.jpg. http://westernparadigm.files.wordpress.com/2008/10/aristotle.jpg. Claudius Ptolemy (100-170). http://www.freewebs.com/mdreyes3/FWThumbnails/Ptolemy_geocentric_model.gif.

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Week 5 Wed. Orbits and Gravity OpenStax Astronomy Ch. 3

Week 5 Wed. Orbits and Gravity OpenStax Astronomy Ch. 3. Johannes Kepler and the Laws of Planetary Motion.

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Announcements

Announcements.

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Satellite Motion

Satellite Motion. Low Orbit. A container falls off the space station while in low earth orbit. It will move A) straight down toward Earth. B) curving slowly down toward Earth. C) in the same orbit as the space station. D) ever farther away due to lower mass. E) rapidly away into space.

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Binary Stars

Binary Stars. Palomar Observatory. Star systems within 10 Pc have been cataloged by RECONS (Jan 2012). Total systems 259 Singles 185 Doubles 55 Triples 15 Quadruples 3 Quintuples 1. Star Systems. Star systems can involve both single and multiple stars. Double stars common.

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Apollo Missions to the Moon

Project Overview. Apollo Missions to the Moon. This lesson is designed to engage students to inquire and discover the principles of Kepler's First Law of Planetary Motion.

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