![](https://blogs.iu.edu/sciu/files/2017/03/NASA_EagleNebula-1t5i6l6.png)
Astronomers have a favorite saying that if a picture is worth a thousand words, then a spectrum is worth a thousand pictures. A spectrum is measured by the scientific technique known as spectroscopy, and unless you’re already familiar with the term, this may compel you to ask: what is spectroscopy? The short answer is that… Read more »