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[DOCX File]PC\|MAC
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Term or concept Definition and explanation The Universe. What is Earth’s Sun and what is its role in the solar system? What is the Milky Way galaxy and the Sun’s position in it? What is the Big Bang and what does it say about the age of the universe? What is meant by the phase “looking out in the universe is looking back in time?”
how wide is the milky way

[DOC File]www.euhou.net
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The Tg factor is the age of our galaxy but this is fairly well established at around 9 billion years (for the bulk of the Milky Way). ---Optional Activity: Anyone Out There? Cards. If you are doing the activity, ask for group #6s guess. *** This guess has two numbers, lifetime and the fraction of the lifetime of the galaxy.
what is the milky way

[DOC File]Discovering the Milky Way - NASA
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A spiral galaxy (like our galaxy, the Milky Way) that is our closest neighbor, about two million light-years from Earth Context: Scientists predict that the Andromeda Galaxy will collide with the Milky Way, possibly resulting in the end of life as we know it.
center of the milky way

[DOC File]XXX/123 - University of Phoenix
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galaxy. A component of our universe made up of gas and a large number (usually more than a million) of stars held together by gravity. When capitalized, Galaxy refers to our own Milky Way Galaxy. General Relativity
pictures of the milky way

[DOC File]acoustic peaks - NASA
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This is called differential rotation, and is what happens in the Milky Way galaxy (and all other spiral galaxies). Definition of Galactic longitude and quadrants. Have a student volunteer to be the Sun and have her/him stand on the letter S. Have another student volunteer to be the Black Hole at the center of the Galaxy.
how to see milky way

Milky Way - Wikipedia
Small Magellanic Cloud – An irregular galaxy of stars that is one of several in the Local Group of galaxies to which our own Milky Way belongs. Period-Luminosity Relation – principle that variable stars with longer periods will have a higher intrinsic brightness than stars with shorter periods.
how big is the milky way

[DOC File]Discovery Education
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Milky Way = spiral galaxy (4 spiral arms) Spiral arms were detected by H content. H. 2. gas used because. H most abundant element in Universe. Interstellar gas made mainly of H. 2 The 21-cm wavelength of H. 2. can penetrate the interstellar gas and dust all the way across the galactic diskBecause of H. 2. gas we have learned. 4 major spiral arms. Lots of minor arms
number of stars in the milky way

Milky way galaxy definition