Canadian - American astrophysicist, astronomer, and theoretical cosmologist. Peebles was awarded half of the Nobel Prize in Physics in 2019 shared with Michel Mayor and Didier Queloz for their discovery of an exoplanet orbiting a sun - like star
American geologist and Professor of Geology and Geophysics at the California Institute of Technology. He is known for his work in the fields of cosmochemistry, meteoritics and astrophysics