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:
“The stars which shone over Babylon and the stable in Bethlehem still shine as brightly over the Empire State Building and your front yard today. They perform their cycles with the same mathematical precision, and they will continue to affect each thing on earth, including man, as long as the earth exists.”
—Linda Goodman (b. 1929)
“And is it true? And is it true,
This most tremendous tale of all,
Seen in a stained-glass window’s hue,
A Baby in an ox’s stall?
The Maker of the stars and sea
Become a Child on earth for me?”
—Sir John Betjeman (1906–1984)
“And now the sparrows warring in the eaves,
The curd-pale moon, the white stars in the sky,
And the loud chaunting of the unquiet leaves,
Are shaken with earth’s old and weary cry.”
—William Butler Yeats (1865–1939)