(S (S (BASENP (DT The) (JJ icy) (NNS particles)) (VP (VP (VP (VBP hit) (BASENP (DT the) (NN detector) (NN target))) (PP (IN at) (NP (BASENP (NNS speeds)) (PP (IN between) (NP (BASENP (QP (NN 15,000) (CC and) (NN 39,000)) (NN MPH)) (PRN (LRB -LRB-) (BASENP (NN 23,000) (CC and) (NN 63,000) (NN KPH)) (RRB -RRB-))))))) (COMMA ,) (S (VP (VBG vaporizing) (ADVP (RB instantly)))))) (PERIOD .))