Question

what makes the star get light and heet

Answer 1

stars may get light and heat from absorbing the heat of sun but in case of sun it gets heat from the gasae present in it
i hope this answer will help you

Answer 2

Nuclear fusion happen because the mass of the star is so big that the atoms inside of it are held at a extremely high pressure .

If the pressure is to high , light atom such as hydrogen , helium , lithium and many other can fuse together and produce energy .

This energy is transformed in to light wich make stars shine and with this energy produce, heat is also given out.