►Sun: Basic information
The Sun and Earth Comparison:
Compared to Earth, the Sun is enormous!
These images of the Earth and the Sun
are not at
the same scale. The Earth would only look like a
tiny dot compared to this picture of the Sun!
Mass:
The Sun's mass is about 333,000 times Earth's mass.
Temperature: About 6000 C.
Diameter: The sun is 1,391,000 kilometer,(862,400) in diameter
Earth is 12,742 kilometer,(7,900 miles) in diameter.
Planets Distance from Sun:
Solar radiation is radiant energy
emitted by the sun, particularly electromagnetic energy. About half of
the radiation is in the visible short-wave part of the electromagnetic
spectrum. The other half is mostly in the near-infrared part, with some
in the ultraviolet part of the spectrum [1]. The
portion of this ultraviolet radiation that is not absorbed by the
atmosphere produces a suntan or a sunburn on people who have been in
sunlight for extended periods of time.
Solar radiation is commonly measured with a pyranometer or
pyrheliometer.
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Solar Energy - Page 1/3