Light pollution articles
Why can't you see the Milky Way anymore?
For many people today, the night sky above their homes is a canvas painted with stars, but it lacks the defining feature...
What is a really bright light in the sky?
Seeing a dazzling, unmoving light in the night sky, perhaps brighter than any star and second only to the Moon, is a com...
What is the bright light in the sky looking west?
The very bright light seen low in the western sky shortly after the Sun dips below the horizon is one of the most common...
What does it mean when you see a string of lights in the sky?
Seeing a long, unwavering string of lights marching silently across the night sky can be a genuinely arresting experienc...
What is a bright light in the sky at night?
Seeing a brilliant, unmoving light hanging in the night sky can certainly prompt a moment of pause, or even confusion, e...
Why is there a random light in the sky at night?
Seeing a sudden, unannounced burst of light streak across the night sky can be jarring. One moment you are looking at fa...
What is the sudden flash of light in the sky?
Seeing a sudden, brilliant flash of light streak across the night sky is an arresting experience, often leaving the obse...
What is the light of a star?
The light that reaches our eyes from the distant pinpricks in the night sky is the end product of immense physical proce...
What kind of light does the Earth emit?
The Earth is constantly interacting with light, but the light it sends back into space is fundamentally different from t...
How does photosynthesis convert light into chemical energy?
The process by which plants, algae, and some bacteria capture the boundless energy streaming from the sun and lock it in...
Why is the speed of light constant in a vacuum?
The speed of light in a vacuum, commonly symbolized as $c$, is one of the most peculiar and non-negotiable numbers in al...
How does the eye convert light into neural signals?
The process by which the eye captures the outside world and translates it into language the brain can understand involve...