# R3 | x-ai/grok-4.3 | run 2

## Prompt

Who was awarded the 2020 Nobel Prize in Physics, and for what? Cite your sources.

## Response

The 2020 Nobel Prize in Physics was awarded to three scientists for their groundbreaking work on black holes. One half went to Roger Penrose, and the other half was shared by Reinhard Genzel and Andrea Ghez.

## Laureates and Contributions
- **Roger Penrose** received one half of the prize for his theoretical proof that black hole formation is a robust prediction of general relativity.[[1]](https://www.nobelprize.org/prizes/physics/2020/summary/)
- **Reinhard Genzel** and **Andrea Ghez** jointly received the other half for their independent discoveries of a supermassive compact object at the center of the Milky Way galaxy, now understood to be a black hole.[[1]](https://www.nobelprize.org/prizes/physics/2020/summary/)

These awards were announced by the Royal Swedish Academy of Sciences.[[2]](https://www.aps.org/publications/apsnews/202011/nobel-physics.cfm)

What aspect of black hole research interests you most?
