(S (S (BASENP (NNS Scientists)) (VP (VP (VBP are) (ADVP (RB also))) (VP (VBG planning) (PP (IN on) (S (VP (VP (VBG using) (NP (BASENP (DT the) (NNP Hubble) (NNP Space) (NNP Telescope)) (CC and) (BASENP (DT the) (NNP Chandra) (NNP X-ray) (NNP Observatory)))) (PP (IN in) (NP (BASENP (DT an) (NN attempt)) (S (VP (TO to) (VP (VB get) (NP (BASENP (JJR more) (NNS images)) (PP (IN of) (BASENP (DT the) (NN event))))))))))))))) (PERIOD .))