GENERAL KNOWLEDGE

Detailed explanation-1: -Massive stars transform into supernovae, neutron stars and black holes while average stars like the sun, end life as a white dwarf surrounded by a disappearing planetary nebula. All stars, irrespective of their size, follow the same 7 stage cycle, they start as a gas cloud and end as a star remnant.

Detailed explanation-2: -The creation of the Universe has passed through different stages. These stages may be divided into 3 eras depending on the energy/matter interaction processes. The first stage is the pre-compression era, the second is the compression era, and the third is the post compression era.