Spacecraft Systems

http://www.braeunig.us/space/systems.htm

Although the detector technology differs, in each case an image in focused by a telescope onto the detector where it is converted to digital data. Vidicon: An imaging device consi
Typical spacecraft subsystems and instruments.

Underwater Bases and Vehicles

http://www.etfriends.com/Underwater.html

ETs with their advanced technology have been using the seas as their home base for centuries. From there, they measure levels of spiritual/physical progress, electromagnetic waves

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