Diffuse Interstellar Band: Absorption (electromagnetic radiation), Astronomical spectroscopy, object, medium, Ultraviolet, Visible spectrum

Extinction (Astronomy): Astronomy, Absorption (electromagnetic radiation), Scattering, Electromagnetic radiation

Astronomical Neutron Source: source, Neutron, Electromagnetic spectrum, visual object, Spectral energy distribution

Astronomical Cosmic ray Source: source, ray, object, Electromagnetic spectrum, Spectral energy distribution, observatory

Interference Filter: Dichroic filter, filter (optics), Absorption (electromagnetic radiation), Band-pass