The Blue Marble

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The Blue Marble
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Antarctica
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Earth At Night
This composite view of earth shows the global
city lights as seen by the Defense Meteorological
Satellite.
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Mosaic of the United States
A mosaic of the United States prepared by using
16 images from the Advanced Very High Resolution
Radiometer (AVHRR) sensors on the meteorological
satellites NOAA-8 and NOAA-9. The images were
acquired between May 24, 1984 and May 14, 1986.
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Earth Facts
Third Planet from the Sun Diameter at the Equator
7,926
miles Equatorial circumference
24, 902.4 miles Distance from Sun
93 Million
Miles Length of Day
24 Hours Revolution Period
about the Sun 365 days 5
hrs Surface Temperature
-128 F to 136 F Moons
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(the Moon)
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Earths orbit
The earth goes around the sun once each year
while meanwhile rotating about its axis once each
day.
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Earth Mythology
Planetary Symbol
Gaea, or Mother Earth, was the great goddess of
the early Greeks. She represented the Earth and
was worshipped as the universal mother. In Greek
mythology, she created the Universe and gave
birth to both the first race of gods (the Titans)
and the first humans.
Note Earth is the only planet whose English name
does not derive from Greek/Roman mythology. The
name derives from Old English and Germanic. 
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Journey to the Center of the Earth
Earth's Layers (depths in km) The earth is
divided into four main layers the inner core,
outer core, mantle, and crust.
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The Moon
This full disc of the Moon was photographed by
the Apollo 17 crew. The Moon is on average
238,857 miles from the Earth. Its diameter is
2,160 miles. Both the rotation of the Moon and
its revolution around Earth takes 27 days, 7
hours, and 43 minutes.
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Earth as seen from the Moon
This view of the Earth rising over the Moon's
horizon was taken from the Apollo 11 spacecraft.
The lunar terrain pictured is in the area of
Smyth's Sea on the nearside.