http://www.sciencemag.org/news/2019/10/physics-nobel-honors-discovery-exoplanets-and-evolution-universe

The 2019 Nobel Prize in Physics has been awarded to three scientists for their discovery of planets outside the solar system and work in understanding the evolution of the universe.

The three new Nobel laureates are James Peebles, of Princeton University, and Michel Mayor and Didier Queloz, both of the University of Geneva in Switzerland. In the 1980s, Peebles used theoretical tools and calculations to trace the evolution of the universe from the big bang almost 14 billion years ago. His results showed that the visible universe of stars and galaxies is just a small fraction of the total mass and energy in the universe, laying the groundwork for research into dark matter and dark energy, two unseen components. "I was very uneasy about going into cosmology because the experimental observations were so modest," said Peebles, who the Nobel prize committee reached by phone for an interview at a press conference announcing the prize today in Sweden. "The field grew and I grew with it." Peebles was profiled in a 1998 Science feature.