Stars are primarily made of hydrogen and helium. If a star is blue in color, it is hotter, while if it is red in color, it is cooler. A star's size is dependent on its mass. They range from super small to supergiants.
Stars begin as nebulae. They are formed when clouds of gas and dust collapse, leading to hydrogen fusion into helium in their cores. Their star status depends on their mass.
The death of a star happens when it exhausts its nuclear fuel, which changes its appearance and structure.
Dense remnant of a star that exploded as a supernova. Formed when the core of a massive star collapses under its gravity.
Also known as quasi-star, the energy is acquired by the matter that falls into the hole.
A young star that has not gone through the process of nuclear fusion in its core. They shine due to releasing heat as the clouds attract more materials.