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8/9/2019 Our Moon a Look at Our Nearest Neighbor in Space
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A look at our nearest
neighbor in Space!
The Moon
http://www.marcusmoon2022.org/
http://www.marcusmoon2022.org/http://www.marcusmoon2022.org/8/9/2019 Our Moon a Look at Our Nearest Neighbor in Space
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What is the Moon?
A natural satellite
One of more than 96 moons in
our Solar System The only moon of the planet
Earth
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Location, location, location!
About 384,000 km
(240,000 miles)
from Earth 3,468 km (2,155
miles) in diameter
(about the size of
Earth)
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Birth of the Moon
Born 4-5 billionyears ago
Formed from impactof Mars-sizedplanetesimal onEarth
Debris from bothobjects meltedtogether to form theMoon
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Cut to the Core
3 major divisionsof the Lunarinterior
Crust - averagethickness of about70 kilometers
Mantle
Core - radius isbetween 300 and425 kilometers
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The Moons Surface
No atmosphere
No liquid water
Extreme
temperatures
Daytime = 130C
(265F)
Nighttime = -190C
(-310 F)
1/6 Earths gravity
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Lunar Features - Highlands
Mountains up to 7500 m
(25,000 ft) tall
Rilles (trenchlikevalleys)
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Lunar Features - Craters
Up to 2500 km (1,553 miles) across
Most formed by meteorite impact on the Moon
Some formed by volcanic action inside the Moon
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Lunar Features - Maria
Originally thought to be
seas by early
astronomers
Darkest parts of lunar
landscape
Filled by lava after crash
of huge meteorites on
lunar surface 3-4 billion
years ago Mostly basalt rock
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Maria
Craters
Can you see the rays?
Does this photo show
us a limb or terminator
line?
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Movements of the Moon
Revolution Moon orbits
the Earth every 271/3 days
The moon rises in the east
and sets in the west
The moon rises and sets
50 minutes later each day
Rotation Moon turns on
its axis every 27 days
Same side of Moon
always faces Earth
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Far Side of the Moon
First seen by Luna 3
Russian space probe in
1959
Surface features
different from near
side
More craters Very few maria
Thicker crust
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Its Just a Phase
Moonlight is reflected
sunlight
Half the moons surface is
always reflecting light
From Earth we see
different amounts of the
Moons lit surface
The amount seen is called
a phase
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Waxing and Waning
New moon
Waxing Crescent moon
First Quarter moon Waxing Gibbous moon
Full moon
Waning Gibbous moon
Third Quarter moon
Waning Crescent moon
New moon
e a r t h
m o o n o r b i t ` s
e a r t h
l a s t ( t h i rd ) q u a r t e r
g i b b o u s m o o n
f u ll m o o n
g i b b o u s m o o n
f ir s t q u a r t e r
c r e s c e n t
n e w m o o n
c r e s c e n t
w a n i n g M o o n
w a x in g M o o n
S U N
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FULL
QUARTER
CRESCENT
GIBBOUS
FOUR MAIN SHAPES
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Earth
Moon
MoonPlane of earths orbit
Plane of lunar orbit
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Lunar Eclipses
Moon moves into
Earths shadow this
shadow darkens theMoon
Umbra
Penumbra
About 2-3 per year Last up to 4 hours
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Solar Eclipses
Moon moves between
Earth and Sun
Moon casts a shadow
on part of the Earth Total eclipses rare
only once every 360
years from one
location!
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The Tides
Tides caused by pull of Moons gravity on Earth
High tide
Side facing Moon and side away from Moon
Every 12 hours, 25 minutes
Low tide
On sides of Earth
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Exploring the
Moon
1950s to 1960s -
probes
Neil ArmstrongFirst man on the Moon
July 20, 1969
Six Apollo missions
(1969-1972)
382 kg (842 lbs) rocks
12 Americans have
walked on the moon
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When will we return?
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Ice on the Moon?
1994 Clementine probe
1998 Lunar Prospector
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Moon base of the future?
What would you need to live there?
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Name this phase!
Full Moon
What time does this phase rise and set?
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Name these
features.
Namethese
features.
Craters
Maria
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Does this image show us the near
side or far side of the moon?
Far SideHow can you tell?
I hi li h li b
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Is this line the limb or
terminator?
Is this line the limb
or terminator?
Limb
Terminator
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Name this phase!
First Quarter
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Name this phase!
Waxing Crescent
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Does this image show the near side or the
far side of the moon?
Near Side
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Name this phase!
Waning
Gibbous
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Name thisphase!
Third Quarter
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From what direction does
the moon rise?
The East
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Name this phase!
Waxing Gibbous
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Name this phase!
Waning Crescent
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What might be happening in this image?
Lunar Eclipse
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Is this line the limb or
the terminator?
Limb
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Name this phase!
Look closely!
Waxing Gibbous
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Name this phase!
Full Moon
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Name this phase!
New Moon
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Does the moon rise or set in the west?
It sets in the west.
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Name this phase!
Waning Gibbous
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Name this
phase!
Waning Crescent
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Name this phase!
Waning Gibbous
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Photo resources http://www.nasm.si.edu/apollo/AS15/a15images.htm
http://nssdc.gsfc.nasa.gov/photo_gallery/photogallery- http://clementine.cnes.fr/index.en.html
http://cass.jsc.nasa.gov/pub/research/clemen/clemen.ht
http://spaceflightnow.com/news/n0108/15mooncreate/ http://seds.lpl.arizona.edu/nineplanets/nineplanets/pxmo
http://www.nasm.si.edu/apollo/AS15/a15images.htmhttp://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-moon.htmlhttp://clementine.cnes.fr/index.en.htmlhttp://cass.jsc.nasa.gov/pub/research/clemen/clemen.htmlhttp://spaceflightnow.com/news/n0108/15mooncreate/http://seds.lpl.arizona.edu/nineplanets/nineplanets/pxmoon.htmlhttp://seds.lpl.arizona.edu/nineplanets/nineplanets/pxmoon.htmlhttp://spaceflightnow.com/news/n0108/15mooncreate/http://cass.jsc.nasa.gov/pub/research/clemen/clemen.htmlhttp://clementine.cnes.fr/index.en.htmlhttp://nssdc.gsfc.nasa.gov/photo_gallery/photogallery-moon.htmlhttp://www.nasm.si.edu/apollo/AS15/a15images.htm8/9/2019 Our Moon a Look at Our Nearest Neighbor in Space
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More photo resources
http://www.nrl.navy.mil/clementine/clemovies/clemovi
http://www.solarviews.com/eng/moon.htm
http://news.bbc.co.uk/1/hi/sci/tech/620649.stm http://skyandtelescope.com/observing/objects/eclipses/a
http://lunar.arc.nasa.gov/results/ice/eureka.htm
http://www.space.com/scienceastronomy/solarsystem/m
http://www.nrl.navy.mil/clementine/clemovies/clemovies_index.htmlhttp://www.solarviews.com/eng/moon.htmhttp://news.bbc.co.uk/1/hi/sci/tech/620649.stmhttp://skyandtelescope.com/observing/objects/eclipses/article_99_1.asphttp://lunar.arc.nasa.gov/results/ice/eureka.htmhttp://www.space.com/scienceastronomy/solarsystem/moon_nss_020604.htmlhttp://www.space.com/scienceastronomy/solarsystem/moon_nss_020604.htmlhttp://lunar.arc.nasa.gov/results/ice/eureka.htmhttp://skyandtelescope.com/observing/objects/eclipses/article_99_1.asphttp://news.bbc.co.uk/1/hi/sci/tech/620649.stmhttp://www.solarviews.com/eng/moon.htmhttp://www.nrl.navy.mil/clementine/clemovies/clemovies_index.html