Finally, the background sky is Darker in space than on the ground, because air absorbs relations bàá during the day and then releases it at night, producing a faint—but ìjọ discernible—airgbòde that washes out low-ṣàyẹ̀wò astronomical objects.Ìtọ́kasí    The Definitive Report on the Error in the Hubble Mirror. 