( ( In ( ( a ( probable ( mission scenario ) ) ) ( to ( an asteroid ) ) ) ) ( , ( ( a ( large cargo ) ) ( ( will ( ( ( ( be ( launched ( into ( high ( Earth orbit ) ) ) ) ) and ) ( ( undergo ( one ( or ( two ( gravity assists ) ) ) ) ) ( by ( ( the Moon ) ( -LRB- ( ( discussed below ) -RRB- ) ) ) ) ) ) ( to ( ( ( pick up ) speed ) ( to ( rendezvous ( with ( the asteroid ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (NP (DT a) (JJ probable) (NN mission) (NN scenario)) (PP (TO to) (NP (DT an) (NN asteroid))))) (, ,) (NP (DT a) (JJ large) (NN cargo)) (VP (MD will) (VP (VP (VB be) (VP (VBN launched) (PP (IN into) (NP (JJ high) (NN Earth) (NN orbit))))) (CC and) (VP (VB undergo) (NP (CD one) (CC or) (CD two) (NN gravity) (NNS assists)) (PP (IN by) (NP (NP (DT the) (NN Moon)) (PRN (-LRB- -LRB-) (VP (VBN discussed) (ADVP (RB below))) (-RRB- -RRB-))))) (S (VP (TO to) (VP (VB pick) (PRT (RP up)) (NP (NN speed)) (PP (TO to) (NP (NP (NN rendezvous)) (PP (IN with) (NP (DT the) (NN asteroid)))))))))) (. .)))
In a probable mission scenario to an asteroid, a large cargo will be launched into high Earth orbit and undergo one or two gravity assists by the Moon (discussed below) to pick up speed to rendezvous with the asteroid.
(ROOT (S (NP (NNP High) (NNP gravity)) (VP (VBZ explains) (NP (NP (DT the) (JJ spherical) (NN shape)) (PP (IN of) (NP (NNS ceres)))) (, ,) (SBAR (IN once) (S (VP (VBD thought) (S (VP (TO to) (VP (VB be) (NP (DT the) (JJS largest) (NN asteroid))))))))) (. .)))