Stars are mainly made of hydrogen and helium gas. In the centre of a star ,the temperature and pressure are so high that four protons can fuse to form helium, in a series of steps. This process releases huge amount of energy and makes the star shine brightly. At beginning of their life , stars burn hydrogen.

What Happens Inside A Star. 

Stars die because they exhaust their nuclear fuel. Once there is no fuel left, the star collapse and the outer layers explode as a 'supernova ' what's left over after a supernova explosion is a neutron star- the collapsed core of the star -or, if there's sufficient mass, a black hole.

What Happens If A Star Dies? 🌟

Turbulence within a single core leads to multiple dense clumps. These clumps independently collapse to form stars that orbit each other. Gravitational instabilities in a massive accretion disk cause the formation of a similar, secondary disk within the first ,resulting in two stars that orbit each other.

How Are Binary Stars Formed

A start system or stellar system is a small number of stats that orbit each other, bound by gravitational attraction.A large group of stars bound by gravitation is generally called a star cluster or galaxy, although, broadly speaking, they are also star system.

What Is Star System?  🌟

It's easily possible to have 8,9,or even greater numbers of stars all bound together in the same system for millions or even billions of years.

Is An 8 Star System Possible?!! 

A system of two stars orbiting each other is a binary star 🌟A system with more than two stars orbiting each other is a multiple star system.Open clusters ate made of young stars that formed from the same nebula.The stars may eventually be pulled apart by gravitational attraction to other objects.

How Are Star Systems Made?

Stars are not always single ,most of them are combined, having 2 od more star systems ,for instance Alpha Centuari is a system of 3 stars

Some twenty-three years after the discovery of pulsars and their identification as rotating neutron stars, neutron star physics may be regarded as comingofage. Pul sars and accreting neutron stars have now been studied at every wavelength, from the initial radio observations, through optical, X-, and "{-ray, up to the very recent observations in the TeV region, while theorists have studied in some detail relevant physical processes both outside and inside neutron stars. As a result, comparisonof theory with observation provides a test ofour theoretical ideas in fields as diverse as neutron and nuclear matter, superfluidity and superconductivity, the acceleration of high energy particles, and the generation and maintenance of intense magnetic fields. For example, through observations of glitches and post glitch behavior of pulsars, it has become possible to establish the presence ofsuperfluid neutron mat ter in the inner crust of neutron stars, and to determine some of its properties, while neutron stars in compact binary systems offer one ofthe most efficient energy generation mechanisms known. It is in fact the interactive interpretation of these ,diverse pieces of information that can lead to major advances in our understanding of the physics of these exotic objects, and justifies the characterization of neutron stars as hadron physics laboratories.