I like what you've done with the thumbnail, but personally, I think the text could be modified. I think you could also do something cooler with the text, like transform it a bit. The other thing is for me the font almost pops off the image, but in a bad way. It doesn't look like it's part of the image. The Life below portion is actually fine, it's mainly the main ENCELADUS text. So maybe play with that a bit next time unless you plan on changing it out.
As for the title, way too long. Titles get cut off to ... past a certain point. Mr. Beast says it's 80 characters, but from my experience it's more like 52. I think it depends on where you're seeing it but to be safe I'd never do more than the minimum cutoff, which seems to be 53 in my experience. But generally, I like the title. I would just find a shorter way to approach it if you can.
When it comes to the video itself, I think your music could be lowered a bit or your voice could be increased because they clash a bit too much right now. Your actual presentation though is awesome. It reminds me of some of the bigger channels I've seen. I think the text at 1:20 needs to change. It just doesn't look right. Maybe experiment with other ways to modify the text and figure out where each works best. Same thing with the next scene. The name should probably be lower and the font should be like something you'd see on a plaque somewhere. Right now it stands out a lot.
I would say the video hooks me big time, but more than that, your presentation makes me want to stay. Way better than my stuff!
My highest recommendation, especially for the text problem, would be look at other channels similar to yours and see how they approach these things.