50 years ago, an Earth-based telescope spotted Saturn’s fourth ring
Excerpt from the June 3, 1967, issue of Science News Letter
FULL CIRCLE Saturn’s ring system is incredibly complex, as shown in this image taken by NASA’s Cassini spacecraft in 2013.
JPL-Caltech/NASA, Space Science Institute
Saturn: Four Rings
Walter A. Feibelman of the University of Pittsburgh … has found evidence indicating a fourth ring [of Saturn].…