Term
Alpha Centauri
The star system closest to the Sun. Its light takes more than 4 years to reach Earth (a light year is the distance light travels in a year).
Brief Answers to the Big Questions, Stephen Hawking
Explained in
- Brief Answers to the Big Questions, Stephen Hawking
- The Future of Humanity: Terraforming Mars, Interstellar Travel, Immortality, and Our Destiny Beyond Earth, Michio Kaku
The star system closest to the Sun, about 4.4 light years away. It has three stars, including Proxima Centauri.