User:Hftf/Books/Astro/U–Z

U–Z

 * UBV photometric system
 * Ultimate fate of the universe
 * Ultraviolet catastrophe
 * Unbarred spiral galaxy
 * Variable star designation
 * Variable star
 * Vera Rubin
 * Virgo Supercluster
 * Void (astronomy)
 * Weakly interacting massive particles
 * White dwarf
 * Wien approximation
 * Wien's displacement law
 * Wien's radiation law
 * Wilkinson Microwave Anisotropy Probe
 * Wilson–Bappu effect
 * Wolf-Rayet star
 * Xallarap
 * X-ray binary
 * X-ray telescope