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Binary Systems
Try this!
Have you ever wondered how a very small, bright star can be overshadowed
by a large, dimmer star?
Obtain two balls, a bright yellow tennis ball and a dark colored or
black soccer ball. Place the balls on a table and ask a friend for help
to move the balls around. Have your friend move the tennis ball around
the soccer ball so that it passes in front of and behind the soccer
ball. You then, stand back and observe how the large dim star (the
soccer ball) can
obscure the view of the smaller, brighter star (the tennis ball).
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