(S (S (S (NP (BASENP (NN Evidence)) (PP (IN of) (BASENP (DT the) (NNS clouds)))) (VP (VBD had) (VP (VBN been) (VP (ADVP (RB previously)) (VP (VBN detected) (PP (PP (IN around) (BASENP (PRPD our) (JJ own) (NN galaxy))) (CC and) (PP (IN in) (BASENP (DT the) (NNP Local) (NNP Group))))))))) (CONJP (COMMA ,) (CC but)) (S (NP (NP (BASENP (DT the) (NN temperature) (NN range)) (PRN (LRB -LRB-) (NP (QP (BASENP (DT a) (JJ few) (NN hundred) (NN thousand)) (PP (TO to) (BASENP (DT a) (NN million)))) (BASENP (NNS degrees) (NNP Celsius))) (RRB -RRB-))) (CC and) (BASENP (JJ low) (NN density))) (VP (VBP have) (VP (VBN prevented) (NP (NP (BASENP (NN detection)) (PP (IN outside) (NP (BASENP (DT the) (JJ immediate) (NN neighborhood)) (PP (IN of) (BASENP (NNS galaxies)))))) (CC and) (NP (BASENP (DT the) (JJ reliable) (NN estimation)) (PP (IN of) (NP (BASENP (NN baryon) (NN density)) (PP (IN for) (BASENP (DT the) (JJ entire) (NN universe))))))))))) (PERIOD .))