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What are constellations?

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Title: What are constellations?


1
What are constellations?
2
Definitions (Write)
  • Astronomy Study of the motions and properties of
    objects in space
  • Constellations Observed pattern people use to
    mark the position of stars in the sky

3
Some Info (do not write)
  • Ancient people did not have much light pollution
    so they could see lots of stars
  • Stars do not have a pattern, but ancient people
    thought they saw patterns
  • They associated patterns with traditions and
    legends that were a part of their culture
  • Scientists today have divided the sky into 88
    regions, with each region being paired with a
    constellation

4
Write this
  • Different constellations are visible to us at
    different times of the year due to our location
    on our orbit around the sun- further proof of
    Earths revolution

5
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  • The Zodiac
  • There are many different forms of astrology and
    many different ways of interpreting a chart. But
    at least all Western astrologers agree on
    something as basic as the Zodiac. Don't they? If
    only it was that simple...

6
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  • What Is The Zodiac?
  • The Zodiac is in effect a map of the heavens on
    which the positions of the planets can be
    plotted. An imaginary band around the Earth is
    extended outwards along the plane of the ecliptic
    through which (more or less) the planets rotate.
    This band is then divided into a number of
    sections, each of which is named after one of the
    stellar constellations. As the

7
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  • Earth and the planets move, the apparent location
    of each planet within the Zodiac changes over
    time. Since the Earth revolves around the Sun,
    the Sun appears to move through the Zodiac
    regularly throughout the year. The apparent
    movement of some of the other heavenly bodies is
    less simple.

8
Astrology Definitions- DO NOT WRITE
  • Astrology (dont have to write) The study of the
    positions and aspects of celestial bodies in
    belief that they have an influence on the course
    of natural earthly occurrences and human affairs
  • Horoscope An astrological forecast, as of a
    person's future, based on a diagram of the aspect
    of the planets and stars at a given moment.

9
Astrology Definitions Continued
  • Zodiac an annual cycle of twelve stations or
    "signs" along the ecliptic, the apparent path of
    the Sun across the heavens

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13
Shifting of Constellations (write)
  • Constellations appear to rise and set just as the
    sun does
  • Constellations appear to move one degree of a
    circle per day, completing a full circle each
    year
  • In a half of a year, the constellation will be
    half way around the celestial sphere (the part of
    the sky we can see)

14
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  • Throughout the year, the apparent diameter of the
    sun changes in a cyclic fashion due to the
    Earths slightly elliptical orbit
  • As the Earth revolves around the sun, it is
    moving towards a star for half the year, away
    from the star the other have, resulting in a
    blue-shift/red-shift effect on the starlight

15
Orion N. Hemisphere Winter Constellation (do not
write)
  • Orion The most famous stories come from Greek
    and Roman myths. Orion was a famed hunter, and in
    one story boasted that no creature could kill
    him. Hera then sent a scorpion to sting the
    hunter. Orion smashed the animal with his club,
    but not before he was poisoned. Both are now on
    opposite sides of the sky. They cannot be seen at
    the same time.

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17
Ursa Major (Great bear)
  • Probably the most famous constellation, with the
    exception of Orion. Also known as the Great Bear,
    it has a companion called Ursa Minor, or Little
    Bear. The body and tail of the bear make up what
    is known as the Big Dipper. Also called names
    such as the Plough, the Wain and even the Wagon,
    this constellation has a lot of history behind
    it.
  • Several different cultures saw a big bear in the
    sky. The ancient Greeks had a few different
    stories to explain how the animal ended up there.
    In one story, Hera discovered Zeus was having an
    affair with Callisto and turned her into a bear.
    Zeus put her in the sky along with her son,
    Arcas, who became the Little Bear.

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19
Ursa Minor (little bear/little dipper)
20
Leo
  • The constellation Leo is known as the Lion. Leo's
    head and mane make up an upside-down question
    mark called the Sickle. One of the brightest
    spring stars, Regulus (Latin for "little king"),
    is at the base of the question mark. The rest of
    Leo's body, legs, and tail extend to the east.
    During the dry season in ancient Egypt, the lions
    of the desert came close to the valley of the
    Nile when the river flooded, which used to happen
    when the Sun was in Leo. Some have interpreted
    this as the origin of the name of the
    constellation. The ancient Sumerians,
    Babylonians, Persians, Syrians, Greeks, and
    Romans, all recognized this constellation as a
    lion.

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22
Taurus (The Bull)
  • Taurus passes through the sky from November
    through March. Taurus was a very popular
    constellation in ancient times, so there are many
    myths about it.
  • The Greeks thought the stars represented Zeus in
    disguise as a white bull. He tricked Europa into
    climbing on his back. He then swam out to sea and
    carried her to Crete. In Egypt, the constellation
    was a reminder of Apis, the Bull of Memphis. He
    served as a servant to Osiris, god of the Sun.
  • Just as famous as Taurus is the group of stars
    within it. The Pleiades are a group of seven
    stars that lie on the Bull's shoulder. The Greeks
    believed these were the Seven Sisters, daughters
    of Atlas and Pleione. It was told that they asked
    Zeus to place them in the sky to escape Orion,
    who was desperately pursuing them. Little did
    they know that Orion would be placed right next
    to Taurus in the night sky!

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24
  • History Channel Constellations
  • Bill Nye on Astrology

25
Astrology Activity 1 Comparing horoscopes
  • Read the three horoscopes for the same sign out
    of three different newspapers
  • Answer the following questions
  • 1. How well do the predictions of different
    astrologers agree?
  • 2. How specific are the newspaper statements?
  • 3. In what ways could the statements apply to
    different people?

26
Activity Two Find your horoscope
  • Directions Read the horoscopes below. Try to
    find the one for your sign. If you arent sure,
    pick the one youd want to be yours. Write the
    number of the horoscope you believe to be yours
    on the line below
  • My horoscope is horoscope number ________

27
Activity Three Was Your Horoscope Right?
  • Directions The horoscopes in Activity Two were
    from Saturday October 31, 2009. After finding out
    which horoscopes are for which sign, write a
    brief paragraph comparing your day on Saturday to
    the kind of day your horoscope forecasted for
    you. Was the horoscope accurate? Do you buy
    into astrology?
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