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

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