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Transcript
ORGANIZE
YOUR SPACE!
(in order from larger to smaller)
GALAXY CLUSTER
Groups of galaxies that are
bound together by gravity.
Galaxy- Large groupings of stars in space.
Our galaxy (the Milky Way) is a spiral galaxy like
this one.
Spiral Galaxy in Ursa Major
The Crab Nebula in Taurus
The Great Nebula in Orion
Nebula- Huge bodies of dust and gas
that are the birthplace of stars
The Horse Head Nebula in Orion
The Ring Nebula in Lyra
GLOBULAR CLUSTER – Groups of
20,000 to 100,000 older stars that look like a ball
of stars. They are often located in a spherical
halo around galaxies.
OPEN CLUSTER – Groups of about a few
hundred to a few thousand stars. They may include
many young bright blue stars.
Solar System – The sun and nine
planets and other bodies that travel
around the sun.
Asteroid Belt – Most asteroids orbit the sun in this area
between the orbit of Mars and Jupiter
The belt is 180
million km in width
and contains thousands
of asteroids that are
constantly in motion,
crashing into each other
at high speeds and
sending clouds of dust
into space.
The combined mass of
all the asteroids would
only be 1/1000 the
mass of the earth and
if all the asteroids were
combined together their
diameter would be only
half the diameter of
our moon.
Star (our
sun) – A
large body
of mostly
hydrogen
and helium
gas which
releases
light
energy by
nuclear
fusion.
Planet – a large
body composed of
either rock
(terrestrial) or gas
(gas giant) which
orbits the sun.
They shine by
reflecting light
from the sun.
Moon/Satellite-
a body that orbits
around a larger body,
usually a planet.
Planets can have
none, one, or more
than one of these.
Jupiter and two of
its 4 Galilean
moons (Io, Europa,
Callisto, Ganymede).
Earth’s moon
Jupiter’s 4
Galilean moons
Asteroid – Small
rocky bodies that
orbit the sun. They
range in size from a
few meters across to
more than 900 km.
Meteoroid – a rocky body smaller than an asteroid that
orbits the sun. They are really bits of dust or rocks from
space. They can get pulled in by earth’s gravity into our
atmosphere.
Once they enter our atmosphere If they don’t burn up
they are called meteors
(“shooting stars”)
and land on earth they
are called meteorites.
How Did You Do?
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Universe
Galaxy Cluster
Galaxy
Nebula
Globular Cluster
Open Cluster
Solar System
Asteroid Belt
Star (Our Sun)
Planet
Moon/Satellite
Asteroid
Meteoroid