It is glowing brightly because it is so hot. The gas is made of atoms of hydrogen and other chemical elements. The sun is so hot that sometimes pieces are shot out into space. These pieces are single atoms or parts of atoms. All these pieces together make up the solar wind.
Solar wind flows out from the sun in all directions.
This is the Genesis spacecraft folded and fixed inside the nosecone of the rocket. We know that the sun is far away and very hot. NASA scientists want to study what the sun is made of, and there is only one way to do it. Won t work. The temperature of the outside layer of the sun is about a million degrees.