What is electromagnetic energy that reaches Earth from the sun called? Astronomy Scale and History of the Universe Light and Fundamental Forces 1 Answer Dharma R. Jan 2, 2016 Light Answer link Related questions Does gravitational force get weaker with distance? How strong is gravitational force? How does cosmic background radiation change the universe? How does gravity affect the universe? What does red shift mean? When looking at a spectrum of light from a star, how can we tell that the light has undergone... What is redshift and blueshift? What is the redshift of the CMB surface? What is the redshift of the Andromeda galaxy? How do scientists know that there is redshift from a star going away and EM waves have changed lengths? How does redshift differ from blueshift? See all questions in Light and Fundamental Forces Impact of this question 2674 views around the world You can reuse this answer Creative Commons License