That's fine. That's a great way of telling you what a star is doing right now, but that's not the same as seeing one form, is it? The animal equivalent would be to catch an animal and observe it in a zoo - that'll tell you all about what this animal is like, but it doesn't tell you where it came from, what caused this animal to come to be.
Or look at the meteor crater up above - nobody has observed impacts near that scale, so therefore, we don't know what caused it. Right? That's pretty much what the science teacher will have to say, isn't it?
No, the animal equivalent would be to observe how the chemical compound DNA reacts to particular stimula, find that this causes the code to direct the one-celled creatures to become multi-celled ones, then extrapolate that to all biology.
Now, the evidence for evolution usually presented on these threads is the fossil record, the recognition that some life is more akin to other life (phylogenic tree), and the observation of natural mutations.
Why would one be satisfied with these?