MO Missouri Porch

Dark Skies & Stargazing

Protecting the dark

The stars didn't leave — the dark did. Light pollution is washing the night sky out of our towns, but here's the hopeful part: it's the one kind of pollution you can undo in a single night.

Light pollution is the one kind of pollution that vanishes the instant you fix it — turn off the bad light and the sky improves immediately.

Most pollution lingers for years — smoke, plastic, a chemical spill. Light is different. Flip the switch, aim the fixture down, swap a harsh bulb for a warm one, and the sky over your yard gets darker that same evening. That makes protecting the dark something you can actually do.

What we're losing

The 2016 New World Atlas of Artificial Night Sky Brightness found that more than 99% of people in the U.S. and Europe live under light-polluted skies, and widely cited summaries report that about 80% of North Americans can no longer see the Milky Way from home.

Why darkness matters

A dark sky is for more than stargazing. Bringing the night back helps the living things around us, helps us sleep, and even saves money.

  • Wildlife. It matters beyond the stars. Artificial light disorients migrating birds, draws and kills insects, and dims the fireflies (see the Wildlife hub).
  • Health. It disrupts the sleep clock for people and animals alike.
  • Energy. And light that shines up or sideways is simply wasted electricity and money.

Five dark-sky-friendly lighting principles

You don't have to live in the dark to protect it. Good outdoor lighting still lets you see — it just keeps the glow out of the sky and the neighbor's window. These five principles are the whole idea:

  1. 1 Useful — light only where and when it's needed.
  2. 2 Aimed down and shielded — light the ground, not the sky or the neighbor's yard.
  3. 3 Dim — no brighter than necessary.
  4. 4 Warm-colored — not harsh blue-white.
  5. 5 Controlled — on a motion sensor or a timer.

Get involved

DarkSky Missouri is the place to get involved.

Start at home by following the five principles above, then go a step further: encourage better lighting at your church, school, or town, and visit the Wildlife hub to see how the same dark night helps fireflies, birds, and insects. Every light you fix gives a little of the sky back.

Before you head out

Missouri Porch explains; the sky and the season decide.

Last checked: 2026-06-18. The sky calendar changes every year — meteor dates, moon phases, planet positions, eclipses, and aurora odds all move. Check a live source (an astronomy club, an almanac, or NOAA) for the current detail.

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