The fraction of galaxies described by this adjective in galaxy clusters increases alongside another variable in the Butcher-Oemler Effect. This adjective describes the star Sanduleak -69 202 in a 1987 Nature paper that described that star unusually being a progenitor for a supernova. This adjective names a “loop” that intermediate-mass stars may undergo (15[1])when they begin burning helium. This adjective describes anomalously young stars in globular clusters like M53, which are called (*) “stragglers” described by (10[1])this (10[1])adjective. (10[3])Visible (10[1])light is subtracted from light named for this (10[1])adjective in a common index used (10[1])on the x-axis of observational H-R diagrams. Along with white, this color describes the color of type-O stars (10[1])and the star Rigel, (10[5]-5[2])which all (10[1])have low values (10[1]-5[1])for color index. (-5[1])Light’s wavelength [emphasize] decreases, (10[1]-5[1])and thus energy increases, in this color’s namesake “shift.” (-5[3])For 10 points, what color titles a Voyager 1 photo of Earth as a “pale (10[1])dot?” (10[1])■END■ (10[5])