Question

a researcher studies the light emitted by a distant star. the researcher finds that the light received from the star falls slightly closer to the red end of the electromagnetic spectrum when compared to a similar source closer to earth. the researcher claims that the star is moving away from earth. is the researcher correct?
○ no. all hot stars emit red - colored light
○ yes. all moving objects emit red - colored light
○ no. the red - colored light emission is due to the composition of the star.
○ yes. light from any object moving away from earth shifts to red - colored light

Explanation:

The phenomenon described is the Doppler shift (redshift) in light. When an object (like a star) moves away from Earth, the light it emits gets stretched, shifting towards the red end of the electromagnetic spectrum. The other options are incorrect: not all hot stars emit red light (hotter stars can emit blue/white light), not all moving objects emit red light, and red emission here is due to motion (Doppler shift), not star composition. So the researcher is correct because light from objects moving away shifts to red.

Answer:

Yes. Light from any object moving away from Earth shifts to red - colored light.