( ( ( Remote sensing ) ( in ( this context ) ) ) ( ( means ( ( acquiring ( information ( about ( ( the ( Earth 's ) ) surface ) ) ) ) ( by ( ( the use ) ( of ( ( various devices ) ( ( mounted ( ( ( in aircraft ) or ) ( on ( satellites ( in orbit ) ) ) ) ) ( around ( the Earth ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Remote) (NNP sensing)) (PP (IN in) (NP (DT this) (NN context)))) (VP (VBZ means) (S (VP (VBG acquiring) (NP (NP (NN information)) (PP (IN about) (NP (NP (DT the) (NN Earth) (POS 's)) (NN surface)))) (PP (IN by) (NP (NP (DT the) (NN use)) (PP (IN of) (NP (NP (JJ various) (NNS devices)) (VP (VBN mounted) (PP (PP (IN in) (NP (NN aircraft))) (CC or) (PP (IN on) (NP (NP (NNS satellites)) (PP (IN in) (NP (NN orbit)))))) (PP (IN around) (NP (DT the) (NN Earth))))))))))) (. .)))
Remote sensing in this context means acquiring information about the Earth's surface by the use of various devices mounted in aircraft or on satellites in orbit around the Earth.
(ROOT (S (NP (NNS Satellites)) (VP (VBP are) (NP (NP (JJ man-made) (NNS devices)) (PP (IN in) (NP (NN space))) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (VP (VBN used) (S (VP (TO to) (VP (VB observe) (NP (NP (DT the) (NN earth) (POS 's)) (NN surface))))))))))) (. .)))