( ( This method ) ( ( was ( applied ( to ( ( galactic ( star ( ( clusters and ) clusters ) ) ) ( of galaxies ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN method)) (VP (VBD was) (VP (VBN applied) (PP (TO to) (NP (NP (JJ galactic) (NN star) (NNS clusters) (CC and) (NNS clusters)) (PP (IN of) (NP (NNS galaxies))))))) (. .)))
This method was applied to galactic star clusters and clusters of galaxies.
(ROOT (S (NP (DT A) (NN galaxy)) (VP (VBZ is) (VP (RBS best) (VBN described) (PP (IN as) (NP (NP (DT a) (NN cluster)) (PP (IN of) (NP (NP (NNS billions)) (PP (IN of) (NP (NNS stars))))))))) (. .)))