What do astronomers study in X-rays? Why bother studying X-rays? What can X-rays tell astronomers that they can't learn in other wavelengths? What are X-rays anyway?
These science pages cover the most basic concept of what is an X-ray and what is X-ray astronomy, then build to introduce some of the cool objects that astronomers study in X-ray astronomy. If you're new to X-rays and X-ray astronomy, start with the About X-ray Astronomy and About Spectroscopy pages. If you'd rather just learn what astronomers study in X-rays, go straight to X-ray Emitting Astronomical Objects.