The summary is:
The text is a transcript of a video game commentary by a player named Veggeta 777. He is playing a game called Rainbow Six Siege, where he has to defend or attack an objective with his team. He describes his actions, strategies, and reactions as he plays. He also thanks his viewers for their support and asks them to like and subscribe to his channel. He wins two matches in a row and praises his teammates for their performance. He also criticizes the enemy team for being overconfident and misguided. He ends the video by saying goodbye and announcing the next video.
Here are the key facts extracted from the text:
1. A nuclear fusion reaction was sustained at over 100 million°C for 30 seconds.
2. The temperature achieved is nearly seven times hotter than the core of the Sun.
3. The core of the Sun has a temperature of 15 million degrees Kelvin.
4. The experiment was conducted at the Korea Superconducting Tokamak Advanced Research (KSTAR) facility.
5. A net energy gain was achieved in the experiment.
Please note that these facts are based on the information provided in the text and should be verified for accuracy.