Why the night sky is dark?
10526
Why is the sky dark at night?
154100
Why is the surface of the Moon white?
142546
Why is moonlight less colourful than yellow light?
128577
Intensity of light
12651
Why CAN we see the new moon at night?
77611
Why does the camera say Subject is too Dark and refuse to click the shutter
137720
Dark on Light or Light on Dark?
141520
Night light and Redshift don't work
67300
Watch the sun go down
67497
How can it be that the sun emits more than a black body?
90676
Why do light sources appear as stars sometimes?
53008
Why do sunbeams diverge even though the sun is much more than a few kilometers away?
44426
Does light pollution affect sleep quality while already asleep?
86221
Why do stars flicker?
132914
Why does the lake surface appear darker in some areas?
104999
The dark dot in your eye
104989
What causes refraction of visible light?