... Credit Copyright: Tun Tezel ( TWAN ) Explanation: Sometimes the sky itself seems to glow. ... If the glow appears as a faint band of light running across the whole sky , you are probably seeing the combined light from the billions of stars that compose our Milky Way Galaxy . ... If the glow is seen coming up from the horizon just before sunrise or just after sunset, however, you might be seeing something called zodiacal light . ... Publications with keywords: Milky Way - zodiacal light - sky . ...