He is an Emeritus Fellow of New College, Oxford[2] and a Fellow of the Royal Society (elected May 1999). He was awarded the 2011 Balzan Prize for his works on the early Universe.[3] Silk has given more than two hundred invited conference lectures, primarily on galaxy formation and cosmology.
The structure of the cosmic microwave background anisotropies is principally determined by two effects: acoustic oscillations and diffusion damping. The latter is also called collisionless or Silk damping after Joseph Silk.
Silk has over 900 publications, nearly 200 as first author, of which 3 have been cited over 1000 times, over 50 have been published in Nature and 12 in Science.[8]
In 2011, Silk delivered a talk, "The Creation of the Universe," at the first Starmus Festival in the Canary Islands. The talk was subsequently published in the book Starmus: 50 Years of Man in Space.[9]