Transcript Constellations

Constellation Notes
Constellations Day 1
Objective:
• You will use critical
thinking skills in order to
differentiate between
astronomy and astrology.
• You will use the apparent
motion of the earth in
order to explain the
changing view of our
night sky.
Warm-Up
• What is astrology?
• Are you familiar with your
zodiac sign?
Find Your Sign!
Astronomy vs. Astrology
•ASTRONOMY: the
scientific study of the
stars, planets, comets, etc.
•ASTROLOGY: the belief
that the stars can predict
the future and determine a
person’s personality
Astrology vs. Astronomy
What “real” science is
astrology based upon?
What makes astrology a
pseudoscience (fake
science)?
Apparent (not your mom or dad)
•APPARENT MOTION:
rotation of the earth on it’s
axis and revolution around
the sun makes the stars
appear to move in the
night sky
Apparent (not your mom or dad)
What does the word
“apparent” mean again?
How it _________
Appears to move
Apparent (not your mom or dad)
•NORTH STAR: star around
which all other stars
appear to revolve;
currently Polaris, located in
Ursa Minor (Little Dipper)
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Time Elapsed
Photo
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Apparent (not your mom or dad)
Why do you think that
Polaris doesn’t appear to
move?
Apparent (not your mom or dad)
•CONSTELLATIONS:
apparent patterns of stars
(there’s that word
apparent again!)
•88 total Constellations
–Name the night sky
What do you see in this picture?
Can you find Orion?
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Stars in the same constellation are
not the same distance from us. They
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are spread out in space.
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Apparent (not your mom or dad)
Explain why constellations
are called “apparent”
patterns.
(use Orion as an example)
Apparent (not your mom or dad)
•ECLIPTIC: apparent path of
the sun, moon, and planets
through the sky
Zodiac Constellations (Circle of Animals)
•Zodiac constellations are
constellations the sun
appears to travel through
What is that path called
again?
Ecliptic
Zodiac Constellations
•Your zodiac “sign” is the
constellation the sun was
supposedly “in” when you
were born
•13 Zodiac Constellations
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Zodiac Constellations
Take a minute to see if you
know the animal?
Can you identify what they
all are?
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Cenataur
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Where the heck did this guy come from?
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Precession
•PRECESSION: wobble of
the earth on it’s axis
changing our perspective
of the stars (how they ___)
•North star changes over
time (a lot of time!)
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Precession
•Positions of zodiac in night
sky shifted
•Aries originally began with
the vernal (spring) equinox
which now occurs in Pisces
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Did you learn some stuff?
Differentiate between
astrology and astronomy.
Give two specific reasons
why one is considered a
pseudoscience.
Sun’s Length
Objective
• You will compare
astronomical and
astrological time using the
calculations of the time
the sun appears in each
constellation in order to
analyze the zodiac
constellations defined by
astrology.
Warm-Up
• What are constellations?
• How many constellations
there?
• What is their purpose?
Measuring the Ecliptic
Find the ECLIPTIC : Point to it
What is the ecliptic?
The apparent path the sun takes through the sky
Measuring the Ecliptic
For Leo You would measure
from The orange arrow to
the red arrow. Lets try it!
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Closure
• Do the astrological dates for the zodiac
align with the astronomical dates? Explain
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Objective
• You will use constellation
coordinates (know) in
order to identify the
constellations.(do)
• You will use a celestial
sphere (a scientific
model) (know) in order to
locate stars and
constellations (do).
Warm-Up
• What is a scientific
model?
• What information would
you need to identify a
certain constellation or
a star?
Celestial Coordinate System
•Celestial Poles: point in
space directly over the
North and South Poles
Celestial Coordinate System
What is currently located
at the North Celestial
Pole?
Polaris the North Star
Celestial Coordinate System
•Right Ascension (RA):
celestial (sky) longitude
•Right ascension unit: hours,
min (0-23 beginning at the
vernal equinox moving
westward)
Celestial Coordinate System
How can you remember it?
• It moves from RIGHT to
left
• There are 24 divisions
and there are 24 _____ in
a day
Celestial Coordinate System
Let’s Try It!
•Look at your star chart and
name 2 constellations that
are found at 3 hours RA.
•Sometimes it’s easier if you
use a ruler!
Celestial Coordinate System
•Declination (DEC):
celestial (sky) latitude
(“ladder”tude)
•Declination unit: degrees
How can you remember it?
•Declination and Degrees
both start with ____.
Celestial Coordinate System
Let’s Try It!
•Look at your star chart and
name 2 constellations that
are found at -100 DEC
•Use the ruler again to help!
Celestial Coordinate System
•Celestial equator: imaginary
line in space directly above
earth’s equator
Celestial Coordinate System
•If the celestial equator is at
00 declination, degrees
above zero would be
_________ and below zero
would be __________ (think
about a thermometer)
Celestial Coordinate System
At what latitude is the
earth’s equator? _____0
Guess what declination is the
celestial equator? _____0
Celestial Sphere
Declination
Right Ascension
Celestial Coordinate System
•Vernal (spring) Equinox:
point in space where the
ecliptic crosses the
celestial equator
•0 hours right
ascension (celestial
Prime Meridian)
Celestial Coordinate System
How can you remember it?
•But it used to be at the
beginning of Aries and
now it’s in Pisces
•Can you come up with
something?
Where the ecliptic and celestial
equator meet! Meet in spring
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Make a labeled sketch
of the coordinate system shown
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Celestial Coordinate System
Let’s Try It!
•Find the constellations at
the given coordinates.
•Remember that the
numbers proceed from RIGHT
to left, be careful!
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Closure
• 3 things you learned;
• 2 questions
• 1 surprise
• How did you like this style of notes?
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Constellations
Objective
• You will apply knowledge
of constellations and
coordinates in order to
complete constellation
quest.
• You will research stellar
information and the
constellation legend in
order to identify the
constllations origins
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Warm-Up
• When is your birthday?
From your birthday what
is your horoscope?
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Find Your Sign!
Permission Slip: DUE 3-20
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Closure
• what are the two you choose?
• What two pieces of information would you need in order to
locate Hercules?
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