Infrared evidence for protoplanetary rings around seven stars
MAY 01, 1984
DOI: 10.1063/1.2916237
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.
© 1984. American Institute of Physics
