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 watch the white stars darken;
the day comes and the
white stars dim
and lessen
and the lights fade in the city.”
—Hilda Doolittle (1886–1961)
“The stars awaken a certain reverence, because though always present, they are inaccessible.”
—Ralph Waldo Emerson (1803–1882)
“There are times when we must sink to the bottom of our misery to understand truth, just as we must descend to the bottom of a well to see the stars in broad daylight.”
—Václav Havel (b. 1936)