Stars
The internal heating within stars are so great that they sustain thermonuclear reaction of hydrogen to helium and can make heavier elements. The Sun for example has a core temperature of 13,600,000 K. The bluer, more massive, hotter, and older the stars are, the more internal heating it has. During the end of its lifecycle, the internal heating of a star increases dramatically, caused by contracting core, eventually becoming hot enough to fuse helium then carbon or oxygen.
Read more about this topic: Internal Heating
Famous quotes containing the word stars:
“The bay-trees in our country are all withered,
And meteors fright the fixèd stars of heaven.
The pale-faced moon looks bloody on the earth,
And lean-looked prophets whisper fearful change.
Rich men look sad, and ruffians dance and leap;
The one in fear to lose what they enjoy,
The other to enjoy by rage and war.
These signs forerun the death or fall of kings.”
—William Shakespeare (1564–1616)