We’re forgetting what darkness feels like
Urban light pollution and the spread of harsh, blue-tinged LEDs are erasing truly dark night skies, leaving many people unable to experience the Milky Way or even basic night vision. Commenters share memories of pristine rural skies and the psychological calm, awe, and connection to nature that deep darkness can bring, contrasting it with today’s glare-filled cities and ever‑lit homes. Others highlight the trade-offs: modern lighting improves perceived safety and reduces some crimes and traffic accidents, but much of it is unnecessary or poorly designed, prompting calls for shielded, warmer, and dimmer lighting and for dark-sky regulations.
Experiences of True Darkness and Night Sky
- Many recount formative moments under truly dark skies (rural childhoods, cabins, desert crossings, high mountains, dark-sky RV parks, observatories).
- Common reactions: awe, sense of smallness, “mental vertigo,” and a kind of psychological reset.
- Several note that once you’ve seen a Bortle 1–2 sky, suburban “Milky Way” views feel washed out and disappointing.
Visual Perception and Eye Phenomena
- Multiple commenters discuss visual snow syndrome and noisy vision in darkness; some thought “static” was universal, others report perfect black in dark rooms.
- Experiences range from mild background snow to debilitating distortion and constant migraine-like symptoms.
- Example phenomena like Haidinger’s brush are cited to suggest many perceptual effects exist on a spectrum and often go unnoticed.
Light Pollution, LEDs, and Color of Night
- Strong dislike for harsh, high‑Kelvin white LEDs; many miss the softer amber/yellow sodium lights that “felt like night.”
- Claims that LEDs increased light pollution due to higher output and widespread adoption.
- Some argue monochromatic amber LEDs or sodium-like lighting would preserve night vision and ambiance better.
Crime, Safety, and Economic Value of Lighting
- One side stresses lighting’s role in reducing crime and traffic accidents, viewing darkness as too high a price for stars.
- Others counter:
- Light can be directed downward and shielded without harming safety.
- Overbright, poorly designed lighting can create glare and dark pockets, possibly worsening safety.
- Conflicting evidence is cited: some studies finding minimal benefit, another meta‑analysis reporting ~14% crime reduction with improved street lighting.
- Broader debate about “high-trust” vs “medium-trust” societies and reliance on floodlights.
Geography and Access to Dark Skies
- Many note that in eastern US and most of western/central Europe, truly dark sites (Bortle 1–2, ~SQM 22) are rare and often hours away.
- Western North America, parts of Australia, Himalayas, high Andes, Alaska, and some Nordic inland areas are mentioned as remaining dark-sky regions.
- Light pollution maps are frequently referenced to illustrate loss of darkness.
Psychological, Cultural, and Biological Aspects
- Darkness described as calming, meditative, and essential for mental “reset”; some intentionally keep homes dim at night.
- Others describe primal fear during moonless, overcast nights in remote areas, highlighting deep evolutionary responses.
- Concerns raised about impacts on insects, wildlife, circadian rhythms, and possible links between blue light and cancer (evidence in humans described as suggestive but incomplete).
Policy, Design, and Mitigation Ideas
- Suggested measures:
- Downward-facing, shielded fixtures; caps and shutters on streetlights.
- Warmer color temperatures; motion-activated and dimmable systems.
- Dark-sky ordinances (examples from suburbs and RV parks) and local advocacy at city councils.
- Some note trade-offs: a city that dimmed lighting reportedly saw perceived safety drop and later reversed the policy.
Satellites and the Future Night Sky
- Worry that satellite constellations and orbital solar projects could permanently compromise darkness.
- Mention that LEO satellites are most visible around dusk/dawn, but overall trend is toward a more “speckled” sky.