Tourists evacuated from Mexico's hurricane-hit Acapulco

Airlines began to evacuate tourists from Mexico's beachside city of Acapulco on Friday after a scale-topping Category 5 hurricane left a trail of destruction and at least 27 people dead, authorities said.

Proba-3 satellite: Seeing in the dark

One of the precision formation flying Proba-3 satellites as seen from the other during ground testing. The pair will fly in orbit relative to one another down to millimeter scale precision, but in order to do this must keep ...

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Navigation

Navigation is the process of monitoring and controlling the movement of a craft or vehicle from one place to another. It is also the term of art used for the specialized knowledge used by navigators to perform navigation tasks. All navigational techniques involve locating the navigator's position compared to known locations or patterns.

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