Free-Floating Planets and Stellar Clusters

Scientists have been looking for planets in strange places, far from their parent stars, within some of the densest star clusters in the Galaxy

Astronomy

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March-April 2002

Volume 90, Number 2
Page 140

DOI: 10.1511/2002.10.140

The existence of planets outside our solar system has been a delicate matter in astronomy ever since the 16th-century philosopher Giordano Bruno was burned at the stake for (among other things) proposing that the universe holds an infinite number of other worlds. People are no longer set aflame in the public square for proposing the existence of extrasolar planets, but the field remains contentious.

AAO / David Malin

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