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CI 350
Tonya McGrady
Sun
 Moon
 Stars
 Constellations
 Planets
 Meteors
 Comets
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Facts about the Planets:
Interesting facts about the sun:
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The Sun is about 150 million km from the earth.
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Approximately one million Earths can fit inside the Sun.
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There are dark blotches on the Sun's surface called Sunspots. These
are cooler areas of the Sun.
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The Sun spins around once every 27.4 days.
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All substances made by the Sun are invisible.
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The hottest place in the world is Dallol in Ethiopia (East Africa). It's
average annual temperature is 94 degrees Fahrenheit (34.4 C)!
Parts of the Sun
Core
Photosphere
Chromo sphere
Brief overview of the planets:

The solar system consists
of the Sun; the nine
planets, more than 130
satellites of the planets, a
large number of small
bodies (the comets and
asteroids), and the
interplanetary medium.
(There are probably also
many more planetary
satellites that have not
yet been discovered.)
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Traditionally, the solar system has
been divided into planets (the big
bodies orbiting the Sun), their
satellites (a.k.a. moons, variously
sized objects orbiting the planets),
asteroids (small dense objects
orbiting the Sun) and comets
(small icy objects with highly
eccentric orbits)
There are several moons larger
than Pluto and two larger than
Mercury.
There are many small moons that
are probably started out as
asteroids and were only later
captured by a planet.
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Comets sometimes fizzle out and
become indistinguishable from
asteroids.
The Kuiper Belt objects and others
like Chiron don't fit this scheme
well and some even want to
consider Pluto as part of this
class.
The Earth/Moon and Pluto/Charon
systems are sometimes
considered "double planets".

The space between the stars is filled with dusty gas.
Thick dust clouds can even be seen with the naked eye
within the Milky Way blocking the light of distant stars
and providing much of the Milky Way's structure.
Interstellar matter is compressed by the Galaxy's winding
spiral arms. The clouds can be further compressed
through collisions or by blast waves from exploding highmass stars. Lumps of matter therefore form within the
interstellar clouds. If their gravity is great enough, they
can condense into one or more stars. The contraction of
forming stars raises the internal temperature, finally to
the point of ignition of hydrogen fusion. Gravity would
like to make the star as small as possible, but the fusion
reactions stabilize it and keep it from contracting any
further. The whole life story of a star from here on out is
told by the battle between gravity and nuclear fusion, first
one, then the other getting the upper hand.
•The Moon is the only natural satellite of Earth:
•The Moon, of course, has been known since prehistoric times. It is
the second brightest object in the sky after the Sun.
•As the Moon orbits around the Earth once per month, the angle
between the Earth, the Moon and the Sun changes; we see this as
the cycle of the Moon's phases.
•The time between successive new moons is 29.5 days (709 hours),
slightly different from the Moon's orbital period (measured against
the stars) since the Earth moves a significant distance in its orbit
around the Sun in that time