by Mike Selinker and Ian Tullis
Answer: ARCHES

Each set of five clues can be answered so that the answers form a star, with words going in any direction. Starting with the first entry in each cluster, the vertices of the center pentagons, in order, have the letters: THEDE / NSEST / OFTHE / MILKY / WAYST / ARCLU / STERS. Respaced, this is "the densest of the Milky Way star clusters," or the ARCHES cluster.