How would you describe the spectra of virtually all observable objects in the universe?

The spectra of virtually all observable objects in the universe typically exhibit a combination of continuous, absorption, and emission features. Continuous spectra arise from hot, dense objects like stars, while absorption lines occur due to cooler gas clouds absorbing specific wavelengths. Emission spectra can be seen in nebulae and other ionized gases, where electrons transition between energy levels. Overall, these spectral characteristics provide critical insights into the composition, temperature, density, and motion of celestial bodies.