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:
“... 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 stars have grooved our eyes with old persuasions
Of love and hatred, birth,—surcease of nations . . .”
—Hart Crane (1899–1932)
“They cannot scare me with their empty spaces
Between stars—on stars where no human race is.
I have it in me so much nearer home
To scare myself with my own desert places.”
—Robert Frost (1874–1963)