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Space Science
Thousands of years ago, on a small rocky planet orbiting
a modest star in an ordinary spiral galaxy, our remote ancestors looked up and wondered
about their place between Earth and sky. Today, we ask the same profound questions:
·
How did the universe begin and evolve? · How did we get here?· Where are we going?
Are we alone?
Today, after only the blink of an eye in cosmic time, we
are beginning to answer these questions. Space probes and space observatories have
played a central role in this process of discovery. http://spacescience.nasa.gov/
Hydrology
Hydrology
(from Greek: Yδρoλoγια, Yδωρ+Λoγos,
Hydrologia, the "study of water") is the study of
the movement, distribution, and quality of water throughout the Earth, and thus addresses both the hydrologic
cycle and water resources. A practitioner of hydrology is a hydrologist, working
within the fields of either earth or environmental science, physical geography or
civil and environmental engineering.
Domains of hydrology include hydrometeorology, surface hydrology,
hydrogeology, drainage basin management and water quality, where water plays the
central role. Oceanography and meteorology are not included because water is only
one of many important aspects.
(http://en.wikipedia.org/wiki/Hydrology)
Remote Sensing
In the broadest sense,
remote sensing
is the measurement or acquisition of information of an object or phenomenon, by
a recording device that is not in physical or intimate contact with the object.
In practice, remote sensing is the utilization at a distance (as from
aircraft,
spacecraft,
satellite, or
ship) of any device for gathering information
about the
environment. Thus an aircraft taking photographs,
Earth observation and
weather satellites, monitoring of a pregnancy
via ultrasound,
and space probes
are all examples of remote sensing. In modern usage, the term generally refers to
techniques involving the use of instruments aboard aircraft and spacecraft, and
is distinct from other imaging-related fields such as
medical imaging or
photogrammetry. (http://en.wikipedia.org/wiki/Remote_sensing)
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