For the lonely among us who are eager to make contact with life elsewhere in the Universe, the abundance or scarcity of planetary systems around other stars is a particularly interesting question. Tentative reports of gravitational perturbations in the positions of a few nearby stars have been taken as very inconclusive evidence of planets, but until last summer we had no direct evidence of solid, non‐stellar material orbiting any star other than our own.
Topics
Planetary systems
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© 1984 American Institute of Physics.
1984
American Institute of Physics
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