Sorry, it's completely OT, but learning more about the Earth and the Space
is always beautiful!  <3

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"Earth Observation from Space: the Optical View"

Discover how optical Earth observation data is gathered and used in this
free online course from the European Space Agency (ESA).

Free Online Course – starts 12 Sep

https://www.futurelearn.com/courses/optical-earth-observation

sea sea
--
"I disapprove of what you say, but I will defend to the death your right to
say it."

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