صفحه 1:
Moon Formation / Processes
)
Cea ag eae te 1115 علا
Saeed
ow are they different?
صفحه 2:
Earth Moon
7930 miles (12,756.3 km) 2160 miles (3476 km)
olan كيتكت
23 degree axis tilt 7 degree tilt (~no
(seasons!) seasons)
Surface temps -73 to 48 C Surface temps - 107 C to
(-100 to 120F) -153 C (224 F to -243
۲)
Thick atmosphere, mild
greenhouse effect No atmosphere
Liquid water - lots! - at
صفحه 3:
Moon
No Magnetic Field
Small Moon Quakes
Small, Offset Core
Earth
صفحه 4:
Earth’s Moon
* How did our Moon form?
* What's been happening since?
صفحه 5:
A few data to ponder ....
Lower density - “lighter” -
relative to planets
Less iron than whole Earth,
more aluminum and
titanium
Moon's chemical signature ~
Earth’s mantle
صفحه 6:
A few more data to
ponder
Does not orbit in
equatorial plane of
Earth, or ecliptic
Earth/Moon - high angular
momentum
How Did the Moon Form?
صفحه 7:
Lunar Formation Models
The moon is a sister world that formed
in orbit around Earth as the Earth
formed.
The moon formed somewhere else in
the solar system then was captured
into orbit around Earth.
Early Earth spun so fast that it spun off
the moon.
صفحه 8:
Impact by Mars- ۶ ۲ 93
sized proto-planet NA ۱8 RAI 7 5
سس HISTORY
۹ 5اةعلا موأااتط 5.
ago
۱34 TH
« ۲۷
*ززه و(
¢ High angular
momentum
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lorie ce mea
صفحه 10:
ی
صفحه 11:
Copyrighted, LPI
صفحه 12:
Copyrighted, LPI
صفحه 13:
Fetes ater a]
صفحه 14:
Lunar Geologic History
صفحه 15:
Lunar Geologic History
(
, ها
4.5 billion years ago, our Moon
10۳۳5
(lunar rocks and meteorites)
ی
صفحه 16:
ام ,600۲96۵
صفحه 17:
Magma Ocean Rocks
16535
Troctolite
4.2-4.3 03
TE ا
60025
Anorthosite
4.44-4.51 Ga
excise icy
Magma Ocean!
No Water!
صفحه 18:
Lunar Geologic History
Highlands - light,
rough (Terrae)
Mostly anorthosite
NOE elae eS feldspars
- lots of calcium
and aluminum)
“In place” rocks are
4.5 to 4.3 billion
years old
Pe fe ee
صفحه 19:
Lunar Impact Basins
os 20 2
Imbrium Rim Orientale
Big, frequent impacts until 3.8 billion yearBagyo
Impact events continue on all moons and planets
صفحه 20:
Breccias and Impact Melts
15445
Impact melt + clasts
67016
52
صفحه 21:
Lunar Geologic History
Mare Volcanism
Volcanism afterimpacts - most before 3 Ga مس راوع
صفحه 22:
صفحه 23:
Lunar Volcanism
Arist
ات9 } 9
Marius
صفحه 24:
Lava Tubes
صفحه 25:
Lunar Basalts
صفحه 26:
Geologic Lowlands - dark, لیگ
smooth Maria (16%) ۱۱۱۷
Basalt - fine grained dark
igneous rock rich in
iron and magnesium
(stuff that sank in
magma ocean)
Few hundred meters
thick
Rocks are 4.3 to 3.1
billion years old ...
volcanic flows as
recently as 1 billion
صفحه 27:
And then ....
All was quiet.
صفحه 28:
۱ 23 for impacts...
7 November; ~30 Ib TNT
3 m-wide crater (estimate)
صفحه 29:
٠ وواللا هلا
* No Flowing Water
* No Erosion
صفحه 30:
۱ 23 for impacts...
صفحه 31:
~ ov are they different in terms of
geologic processes?
۸۵00 ۰۶
صفحه 32:
Moon
©
NO Active wind/water
erosion
Impacts
NO active volcanoes
Small moonquakes
NO active magnetic field
Buckets of craters
Geologically Inactive!
Earth
Active wind/water
erosion
Impacts
Active volcanoes
Earthquakes
Active magnetic field
Few craters
Geologically Active!
صفحه 33:
Moon
هه
نكل
NO plate tectonics عغوام
tectonics!
صفحه 34:
Earth Moon
©
HOT! Not so hot!
04 وا ۱۵۰
صفحه 35:
What’s Our Plan for Space?
Fly the shuttle as safely as
possible until 2010
Complete the ISS - 6-
person crew by 2009
Align science, exploration,
and aeronautics to support
human space flight
ات هت عط وصتي8
Exploration Vehicle - CEV -
on line
17 عقون ج لاؤتاطقاوع
that informs future
missions to Mars and other
وك
صفحه 36:
Why?
Set up, for the first time, a full-fledged habitat
on another world.
Test advanced spacesuits and rovers.
Try out methods for protecting explorers from
deadly radiation.
Learn to operate crucial life support and power
needed on Mars.
Gauge the effects of the absence of normal
gravity on the body.
New technology.
صفحه 37:
Return to the Moon
“9 Chandryaan - 2007!
LRO - 2008 !
Identify Resources
عع13 ناك عط مدال
لعا لاسي
1 ©
صفحه 38:
Return to the Moon!
E
* 2012 - Develop and test
technologies for resource
utilization,
communications, power
¢ 2014 - CEV, Ares launch »
vehicle
صفحه 39:
eens ES od ل ل لان
او سس Oext: *
صفحه 40: