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Supernovas, Quasars and Pulsars

Horizontales
Almost all galaxies appear to be moving away from us.
Associated with the wave nature of sound. Ex.( A train whistle as it passes you)
A star suddenly increases in brightness because of a catastrophic explosion that ejects most of its mass.
The highest-energy, shortest wavelength electromagnetic radiations.
A type of electromagnetic radiation with a very short wavelength and very high energy.
Verticales
A star near the end of its life that used most or all of its nuclear fuel.
Thought to be a rapidly rotating neutron star. emits regular pulses of radio waves.
An enormous source of compact energy. ( Also called Supermassive Black Holes).
A massive and extremely remote celestial object, large amounts of energy.