Peter Goldreich

Peter Goldreich is a theoretical astrophysicist who developed highly influential models explaining the structure and dynamics of planetary rings. He is also recognized for his extensive research into the orbital resonance and spin states of asteroids and moons within our solar system.

While he has not been awarded a Nobel Prize, he has received numerous other highly prestigious scientific honors. Most notably, he was awarded the National Medal of Science in 2004 and the Crafoord Prize in Astronomy in 1999 for his work in planetary sciences.

Goldreich spent much of his distinguished career as a professor at the California Institute of Technology (Caltech). He also held a long-term position as a professor at the Institute for Advanced Study in Princeton, New Jersey.

Proposed by Peter Goldreich and his colleague William Ward in 1973, this mechanism explains how planets are believed to form from the protoplanetary disk. It suggests that dust particles in the disk settle to the midplane and eventually gravitationally collapse to form planetesimals.