How does a star get 'larger'

Ok. On a previous question I had asked how a star doesn't lose mass, but i found out it does, so here is another question that I want to be answerd
Q:How does a star get larger when it loses mass/weight etc (i really dont care what it loses) if it gets smaller?
Q:Just thought of another question, is/does a black hole move faster than light because it can suck it in

A star fuses hydrogen atoms to form helium atoms. This creates a pressure, not allowing the stars gravity to crush it into itself. These two forces balance out. The stars mass creates gravity...

When the hydrogen in the star runs out, gravity will then take the upper hand, and will try to collapse the star into itself. The core will start to compress, the smaller it gets, the hotter it gets. Once it is hot enough, the star will start fusing helium atoms to form carbon atoms.

This new pressure comes in to take on the stars gravity, since the core is so hot and really close to the stars layers, the pressure pushes the stars gravity away. This heat creates this pressure that i have mentioned a couple times.

This is how a star expands, there is actually a lot more to it to answer the question of how a star dies.


And a black hole does not move faster than light.

A star can get larger in diameter without gaining mass.

Lets take a star like our sun.
It remains its size because of a balance between gravity trying to pull the mass inward, and the heat in its core from the fustion of hydrogen to helium trying to push the mass outward.
Eventually, the star uses up its hydrogen fuel and the core isn't hot enough anymore to support the mass. So it starts to shrink a bit, but that gravitational energy drives up the temperature and pressure in the core and it starts to fuse helium. This is a hotter reaction than hydrogen, so the extra heat forces the mass of the star outward, making its diameter bigger than before.