Therefore , using red light to navigate would not desensitize the receptors used to detect star light .
Another theory posits that since stars typically emit light with shorter wavelengths , the light from stars will be in the blue - green color spectrum .
Using red light to navigate would not desensitize the receptors used to detect star light .
Another theory posits that since stars typically emit light with shorter wavelengths , the light from stars will be in the blue - green color spectrum .