# R3 | openai/gpt-5.4-mini | 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 **Roger Penrose**, **Reinhard Genzel**, and **Andrea Ghez**. Penrose received half the prize **for the discovery that black hole formation is a robust prediction of general relativity**, and Genzel and Ghez shared the other half **for the discovery of a supermassive compact object at the center of our galaxy**. ([nobelprize.org](https://www.nobelprize.org/prizes/physics/2020/summary/?utm_source=openai))

## Details
- **Roger Penrose** — black hole formation as a prediction of general relativity. ([nobelprize.org](https://www.nobelprize.org/prizes/physics/2020/press-release/?utm_source=openai))
- **Reinhard Genzel** — discovery of a supermassive compact object at the Milky Way’s center. ([nobelprize.org](https://www.nobelprize.org/prizes/physics/2020/press-release/?utm_source=openai))
- **Andrea Ghez** — discovery of a supermassive compact object at the Milky Way’s center. ([nobelprize.org](https://www.nobelprize.org/prizes/physics/2020/press-release/?utm_source=openai))

Would you like a one-sentence plain-English explanation of why those discoveries mattered?
