Only a small portion of the Sun (relatively speaking lol) is hot enough to fuse matter. It kinda sounds impossible the way you phrased it but it really isn’t. It’s just… 20 years off.
You’ll hear it again in ten years, too. I suspect fusion energy is possible, it’s just really hard. It’s like powered flight, which was imagined for centuries and we couldn’t quite do it, until suddenly someone did it. Eventually, the physics, materials, and engineering will make a path.
