In what form do both medium-mass and high-mass stars begin and end their life cycles?

19 hertz bruh u trippin? ?

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling

Answerthe distance between the two ends of the galaxy is 150,000 light years;