Question

The stellar halo component of our galaxy (excluding dark matter) has a larger heavy element concentration than the thin disk component of it. True False

Answer 1

False

This statement is wrong and the reverse is true. Means the dark matter has more mass than the white brightening matter.

This is because stars are brighter at their juvenile, young and mature stage. But at the old stage they are dark. That's why there is a series for star,

Star, then red giant, white dwarf and black dwarf or black hole. Black hole is the last stage of a star, which is darker in colour. Black hole forms after the supernova explosion, due to collapse of the nucleus of the star.