The turnoff point for a star refers to the point on the Hertzsprung-Russell diagram where it leaves the main sequence after the exhaustion of its main fuel. By plotting the turnoff point of the stars in star clusters, one can estimate the clusters age.
Read more about Turnoff Point: Stars With No Turnoff Point
Famous quotes containing the word point:
“The point is that nationalism, even in its latest madhouse frenzies under Mussolini and Hitler, is still, like advertising, an arm of big business. Nations as we know them today, were the invention of business and it is natural that business should still consider itself slightly above patriotism and that the strongest international should still be the international of profits.”
—John Dos Passos (1896–1970)