Outside Sources Frame a Galactic Puzzle

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Science  03 Jan 2003:
Vol. 299, Issue 5603, pp. 63-64
DOI: 10.1126/science.299.5603.63

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The Milky Way doesn't have a monopoly on globular clusters. Powerful new telescopes have brought other galaxies' clusters into astronomers' view and into the thick of their efforts to fathom the origin of a familiar but mysterious type of galaxy: elliptical galaxies, common astronomical objects so enigmatic that astronomers aren't sure whether they are much older than our Milky Way galaxy or much younger.