The Belt of Venus over the Valley of the Moon . ... During a cloudless twilight , just before sunrise or after sunset , part of the atmosphere above the horizon appears slightly off-color, slightly pink. Called the Belt of Venus , this off-color band between the dark eclipsed sky and the blue sky can be seen in nearly every direction including that opposite the Sun. ... In the Belt of Venus , however, the atmosphere reflects light from the setting (or rising) Sun which appears more red. ...