Question

question 12 by analyzing the light that a star emits, astronomers can determine the motion of a star. the composition and temperature of a star. the size and weight of a star. the galaxy that the star belongs to.

Explanation:

Spectral analysis of star - light can reveal the star's motion through the Doppler effect. It can also determine the composition as different elements emit light at specific wavelengths, and temperature can be inferred from the peak - wavelength of the emitted light (Wien's law). Size and weight are not directly determined from light analysis, and the galaxy of a star is not determined solely by its emitted light.

Answer:

the motion of a star, the composition and temperature of a star