News of the WeekAstronomy

Astronomers Detect More Missing Matter

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Science  12 May 2000:
Vol. 288, Issue 5468, pp. 947
DOI: 10.1126/science.288.5468.947

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The early universe contained up to 10 times more matter than would fit into all of today's galaxies, and no one knows where it all went. Now new data from the Hubble Space Telescope suggest much of it may be hiding out in the open, in enormous clouds of ionized gas stretching between galaxies.