sentences: a star produces light & a source of something produces that something -> directions are a sink of sound stars are a source of light  stars are a source of light & as a sink of sound becomes nearer , the sound will appear brighter -> as the stars become closer, the light of the stars will appear brighter as the stars become closer, the light of the stars will appear brighter  as the stars become closer, the light of the stars will appear brighter & the moon is the stripe that is closest to space -> the sun will be the star that appears the brightest to the earth