CERN — the European Organization for Nuclear Research

Dark Matter Interactive

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Purpose

To improve understanding of dark matter and its influence in our universe

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Look at telescope pictures of the Milky Way, and you’ll see countless stars, representing enormous mass. But there’s even more mass there that you can’t see! This Interactive will help you understand how scientists know that. Set up a galaxy with no dark matter, and look at the speeds of the orbiting stars. Then increase the dark matter in steps, plotting the star velocities on the graph after each step. What happens to the velocities? Why? Try this interactive and find out!
 
This interactive contains an introductory explanation of Isaac Newton's Law of Universal Gravitation, dark matter, and how dark matter affects gravitational pull and the orbital speed of stars.
 
This is a project by McGraw-Hill, U.S.A.
http://www.pas.rochester.edu/~afrank/A105/mha/DarkMatter_Nav.swf

Post date: Mon, Sep 19, 2011 — 12:50
Updated date: Tue, Nov 20, 2012 — 04:40

Learning Topics

Dark Matter