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:
“There are no stars to-night
But those of memory.
Yet how much room for memory there is
In the loose girdle of soft rain.”
—Hart Crane (1899–1932)
“... a country encapsulates our childhood and those lanes, byres, fields, flowers, insects, suns, moons and stars are forever reoccurring.”
—Edna O’Brien (b. c. 1932)
“The day in his hotness,
The strife with the palm;
The night in her silence,
The stars in their calm . . .”
—Matthew Arnold (1822–1888)