The narrator is playing Universe Sandbox 2, a game that allows users to simulate and manipulate the universe. The narrator's goal is to make the Sun as small as possible while still being able to heat up the Earth. The Sun starts at 700,000 kilometers in size and is gradually reduced to 1 millimeter. Along the way, the narrator experiments with different settings, such as increasing the Sun's mass and temperature, to see how it affects the Earth. The simulation goes through various stages, including the Earth freezing, burning, and eventually being destroyed by a 1-millimeter Sun that is traveling at a billion times the speed of light.
Here are the key facts extracted from the text:
1. The Sun's size in the game is initially 702,000 kilometers.
2. The goal is to make the Sun as small as possible while still heating up the Earth.
3. The Sun's mass needs to be increased when its size is decreased to maintain its gravitational pull.
4. The Sun's size is reduced to 70,000 kilometers, then to 7,000 kilometers, and eventually to 1 millimeter.
5. The Earth's orbit around the Sun needs to be adjusted to compensate for the Sun's reduced size.
6. The Earth's distance from the Sun is reduced to 6,000 kilometers, then to 24,000 kilometers, and eventually to a few hundred kilometers.
7. The Sun's surface temperature is increased to 2,300 degrees Celsius to maintain a pleasant temperature on Earth.
8. The Earth's temperature is around 15 degrees Celsius when the Sun is 1 millimeter in size and 6,000 kilometers away.
9. The game allows for the Sun to be shot at the Earth at a speed of 1 billion times the speed of light.
10. The Sun's high-speed collision with the Earth causes the Earth to boil and eventually atomize.
11. The game is Universe Sandbox 2.