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http://www.physicalgeography.net/fundamentals/6h.html
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earth
science
astronomy
sun
seasons
tutorial
geography
physics
rotation
solar
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To understand why we have seasons, we need to look at the relations ... The sun's rays are pretty close to parallel to each other when they reach the Earth, ...
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seasons
astronomy
earth
science
sun
space
tutorial
study
weather
physics
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地球ガイド ...
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earth
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visualization
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flash
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geography
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daylight
science
astronomy
time
earth
geography
reference
interactive
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seasons
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Cooperative effort between the European Space Agency and NASA to study the Sun, from its deep core to the outer corona, and the solar wind.
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astronomy
science
space
sun
nasa
solar
images
soho
physics
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The Goce satellite returns a remarkable high-definition view of how gravity varies across the Earth.
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gravity
science
earth
physics
map
satellite
geography
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maps
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Comprehensive online encyclopedias of astronomy, math, physics, scientific biographies, and scientific books, with many equations and formulas.
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science
reference
physics
chemistry
math
education
encyclopedia
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Learn all about the earth sun and moon, fly your space rocket get past the asteroids and begin learning! then take a short test and print out your certificate!
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science
moon
earth
space
sun
interactive
games
astronomy
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Current research news plus daily forecasts of solar flares and geo-magnetic storms from NASA.
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astronomy
space
science
weather
news
solar
auroras
reference
sun
education
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Explaining the mathematics behind the attempt to track the visible path the sun takes throughout the year.
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astronomy
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sun
reference
analemma
sundial
physics
navigation
funny
osx
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Righting wrong ideas. Addresses astronomical and scientific misconceptions spread by movies, TV, the news, and popular beliefs.
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blog
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physics
skeptic
blogs
humor
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