Where are stars formed?🤔

 

Most stars are formed within a huge cloud of gas and dust called nebula.

There are millions of nebulae, in space, which can be seen from Earth when they reflect light, from nearby stars.

The forces, within the nebula pull-off the gravity of gas or a shockwave caused by a nearby star explosion make the cloud of gas, dust shrink and glow hotter. 

As this happens, the nebula breaks up into smaller clumps, each of which may eventually, form a star. 

Slowly, the knot of matter gathers together in a disc. 

As the disc spins, it heats up until a nuclear reaction takes place and a new star is born. 

Stars are being born and dying all over the universe. Big Stars have short lives of 10 million years. 

Medium-sized stars last for about 10 billion years whereas small stars may last for 200 billion years. 

Stars are fueled by the nuclear fusion of hydrogen to form helium deep in their interiors. 

The outflow of energy from the central regions of the stars provides the pressure necessary to keep the stars from collapsing under its own weight. 

It also provides the energy by which it shines.

Fun Fact:-

A Dutch astronomer, Christian Huygens, made the first drawing of a nebula in 1656.