Not all the same
Pictured above is the Milky Way. Seen from here, our Sun, so special to us, isn't special at all - just one of 300 billion beautiful white lights. But it is this light, seemingly so fundamental and pure, that holds the keys to unlocking the secrets of the planets hidden around the stars. Figuring out these keys: that's part of my job.
These are planetary systems. Some of their planets have atmospheres. Some of those atmospheres may have evidence of life, though we don't yet know how that would look. Figuring that out: that's part of my job.
This is the Sun's spectrum. Its shadows are caused by the many features of tiny molecules on its surface. We don't yet know which molecules cause each feature. Figuring out these molecules: that's part of my job.
One of the molecules above is phosphine (bottom left). It's my favourite. There are about 14,000 molecules we care about when looking for a new Earth or alien biosignatures. If we want to detect them from here, we need to know their spectra, and we currently don't. Solving this particular problem: that's my job.