Question

A scientist observes two stars in the night sky through a telescope. Star A is white in color and relatively dim. The star’s estimated temperature is very high.

Star B is red in color and extremely bright. The star’s temperature is low compared with other stars.

Help the scientist classify the two stars.
Star A is ( A. Black dwarf B. White dwarf C. Neutron star D. Red super-giant)
Star B is ( A. Black hole B. Red dwarf C. Red giant D. Supernova)

Answer 1

Star A is B, a white dwarf.
Star B is C, a Red Giant

Answer 2

Star A is a neutron star and star B is a Red giant.

Step-by-step explanation:

A neutron temperature are extremely hot objects having very high density and appear white in color. They emit large amount of x-rays. A white dwarf is relatively cooler than a neutron star. Black dwarfs emit no light. A red giant star is a cool star. Thus, star A must be a neutron star.

Star B is red in color and has low temperature and extremely bright. Therefore, it must be a red giant star. A blackhole is not visible, a red dwarf is not bright enough to be visible where as a supernova is an event in which a massive star explodes within a short interval of time.