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Science 21 June 2002:
Vol. 296. no. 5576, pp. 2154 - 2155
DOI: 10.1126/science.1074261
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Perspectives

BROWN DWARFS:
Failed Stars or Overachieving Planets?

I. Neill Reid

With masses between those of stars and planets, brown dwarfs remain a bit of a mystery. Are they failed stars, or giant planets that have lost their stellar companion? In his Perspective, Reid reviews recent progress toward resolving this question, which is important for understanding star formation.

The author is at the Space Telescope Science Institute, Baltimore, MD 21218, USA. E-mail: inr{at}stci.edu

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