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:
“I see His blood upon the rose,
And in the stars the glory of His eyes
His body gleams amid eternal snows,
His tears fall from the skies.”
—Joseph Mary Plunkett (1887–1916)
“the gray filth of it:
the knowledge that humankind,
delicate Man, whose flesh
responds to a caress, whose eyes
are flowers that perceive the stars ...”
—Denise Levertov (b. 1923)
“I teach at Harvard that the world and the heavens, and the stars are all real, but not so damned real, you see.”
—Josiah Royce (1855–1916)