Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 29 January 1999:
Vol. 283. no. 5402, pp. 625 - 626
DOI: 10.1126/science.283.5402.625
Prev | Table of Contents | Next

News Focus

ASTRONOMY:
The Mystery of the Migrating Galaxy Clusters

Alexander Hellemans

A mass migration of galaxies may be taking place, but astronomers can't agree on which way they are going. First reported 4 years ago, the migration seemed to be taking place on a scale so huge--a swath of sky hundreds of millions of light-years across--that astronomers withheld judgment about whether it was real and what could be causing it until confirmation came in. Now three other groups have gone looking for the mass movement and have come back with results that only deepen the mystery. Two of the teams found "bulk motions" of galaxy clusters with very similar speeds but at roughly 90 degrees to the earlier result, while a third team found no bulk motion at all.

Read the Full Text

To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)