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Scientific American

October 1, 1995

1 min read

Beyond Neptune

Hubble telescope spots a vast ring of icy protoplanets

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John Horgan, who has written for Scientific American since 1986, comments on science on his free online journal Cross-Check. He has also posted his books Mind-Body Problems and My Quantum Experiment online. Horgan teaches at Stevens Institute of Technology.

More by John Horgan

This article was originally published with the title “Beyond Neptune” in Scientific American Magazine Vol. 273 No. 4 (October 1995), p. 24
doi:10.1038/scientificamerican1095-24

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