This slide and the next four slides show Venus catching up with the Earth. The two planets are lined

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This slide and the next four slides show Venus
catching up with the Earth. The two planets are
lined up with the Sun on June 8th.
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Venus orbits the Sun counterclockwise as viewed
from above.
April 10
June 1
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The First Observed Transit of Venus
William Crabtree, a draper, attempted to observe
the December 4, 1639 transit of Venus using a
prediction made by Jeremiah Horrox, a
mathematician. (as depicted in a Ford Madox
Brown mural in Manchester City Hall and related
in Transit- When Planets Cross the Sun by
Maunder and Moore)
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The Most Recent Transit of Venus (1882)
There have been only 6 transits of Venus since
the invention of the telescope Dec. 7,
1631 Dec. 4, 1639 June 6, 1761 June 3,
1769 Dec 15, 1874 Dec 11, 1882 Future
Transits June 8, 2004 June 5, 2012
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2004 Transit of Venus Visibility from Earth
From Fred Espenaks sunearth.gsfc.nasa.gov/eclipse
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The sky as seen in Microwaves. This is a picture
of how the Universe looked when it first became
transparent. The red areas are regions that are
slightly overdense (by about 1 part in 100,000).
The slightly overdense regions eventually
collapsed to form the filamentary structure of
galaxies that fills space.
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Simulations showing the formation of the first
stars in the universe http//www.tomabel.com
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Simulations showing the formation of the first
stars in the universe http//www.tomabel.com
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On the largest scales, the galaxies cluster into
voids and filaments. This structure results from
the competition between gravity and expansion.
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Vectors

• A vector is a quantity that has both an amount
  and a direction. A scalar is a quantity that is
  just an amount.
• Examples of vectors velocity, acceleration,
  magnetic field, bands.
• Examples of scalars temperature, pressure, bank
  balance.

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