Light
Why High Clouds Can Leave the Sun Surrounded by a Halo
Learn why high clouds form a 22-degree solar halo, how ice crystals shape its pale ring, and what the sight can—and…
The reading room
All articles
Explore explanations of clouds, light, the Moon and familiar weather patterns. Each piece starts with something visible and follows the question carefully.
Clouds
Cloud Atlas or Open Sky: Two Ways to Learn Cloud Names
Learn cloud names with a field guide and a week of observation, building clear descriptions while keeping cloud…
Moon
When the Moon Became a Calendar in the Sky
Use Moon phases as a sky calendar: learn to recognize the changing shapes, record what you see, and mark the passage…
Weather
The Rainbow-at-the-End Myth: What a Bow of Colour Actually Shows
A rainbow has no fixed endpoint. Learn how the bow’s position depends on your viewpoint, the Sun, and raindrops—and…
Observation
A Window-Side Skywatch for the First Clear Evening
A window-side skywatch turns a clear evening into a simple record of twilight color, helping you notice how the view…
Our point of view
The sky rewards a second look
A changing view can prompt good questions. We explain the patterns behind what you see, while keeping observation separate from prediction.