Life Cycle of a Star
Nebulae Protostar T Tauri or Main Sequence Red Gaint Red Super Gaint Planetary Nebulae Supernova White Dwarf Neutron Star Black Hole Black Dwarf

Nebulae

Protostar

T Tauri or Main Sequence

Main sequence stars can be a variety of colors, depending on their temperature. Hotter stars are blue or white, while cooler stars are yellow, orange, or red. For example, our Sun, a main sequence star, is yellow.

Red Gaint

Aldebaran (Alpha Tauri) is a red giant star as Shown in Figure. Its Comparision with the sun is also shown

Red Super Gaint

Betelgeuse is a red supergiant star in the constellation of Orion. Its Comparision with the sun is also shown

Planetary Nebulae

Messier 57, more commonly known as the Ring Nebula, is about 2,000 light-years away in the constellation Lyra. The Ring Nebula is a planetary nebula that appears as a glowing ring of gas.

Supernova

A massive star destroying itself in a huge supernova explosion

White Dwarf

Sirius B is a white dwarf star that orbits the bright blue-white star Sirius in the Canis Major constellation

Neutron Star

Most neutron stars are observed as pulsars. Pulsars are rotating neutron stars observed to have pulses of radiation at very regular intervals

Black Hole

Parts of a Black Hole

Singularity

Singularity

A singularity is a point where all the mass of a black hole is concentrated, and it has infinite gravity. It is the central point of a black hole, and it is infinitely small but has enormous influence. 

A Black Hole with Features

Black Dwarf

A black dwarf is a theoretical stellar remnant that's formed when a white dwarf star cools and can no longer emit significant heat or light.