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:
“When the deep purple falls over sleepy garden walls, and the stars begin to flicker in the sky,”
—Mitchell Parish (1901–1993)
“I have heard the voice of a hound, just before daylight, while the stars were shining, from over the woods and river, far in the horizon, when it sounded as sweet and melodious as an instrument.”
—Henry David Thoreau (1817–1862)
“A woman with her two children was captured on the steps of the capitol building, whither she had fled for protection, and this, too, while the stars and stripes floated over it.”
—Jane Grey Swisshelm (1815–1884)