Transcript Astronomy - Londonderry School District

Astronomy
The study of
everything beyond
Earth!
7/20/2015
Order of the Universe


From Largest
To Smallest
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Universe
 All
of space and
what is found in
it.
 Full of 100 billion
galaxies with
100 billion stars
each.
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Super Cluster



Cluster of clusters of
galaxies, which
include the local
group.
Largest gravitational
bound system so far.
Ours=Local Group
Cluster
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Cluster



A small group of galaxies.
They are held together by
gravity and orbit each
other.
Ours = Local Group
Milky Way Galaxy and its
50 closest neighbors.
“Local” means the
galaxies are within a
region 3 million light years
across.
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Galaxy
A
vast collection
of dust , gas,
and stars held
together by
gravity.
 Ours =
Milky Way
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Sun’s Neighbors
 The
sun and its
20 closest
neighboring
stars.
 One of Ours =
Alpha Centauri
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Solar System
A group of
satellites revolving
around a star.
 Ours =
The sun and its
collection of 8
planets.

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Star


A hot, bubbling,
glowing ball of gas. It
radiates a huge
amount of energy in
forms of light and
heat.
Ours = The Sun
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Planet


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An object that revolves
around a star.
Ours = The Earth
Natural Satellite
 An
object that
revolves around
a planet
 Ours =
The Moon
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What is the order?
(Largest to Smallest)



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

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
U___________
S___________ C__________
C ___________
G___________
S___________ N___________
S___________ S___________
S___________
P___________
N___________ S___________
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Order of the Universe









Universe
Super Cluster
Local Group/Cluster
Galaxy
Sun’s Neighbors
Solar System
Star
Planet
Natural Satellite
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