Articles About Atmospheric Phenomena (17)
What Are Rainbows?
When sunlight hits water droplets, we see a rainbow. How does it work?
Twilight, dawn, & dusk
Learn more about different kinds of twilight, dawn and dusk.
The Golden Hour – When Sunlight Turns Magical
When the Sun is close to the horizon, its light appears warmer and softer. Why is that so? What is the definition of the golden hour? Explanation with photography tips.
Civil Twilight – Civil Dawn & Dusk
Civil twilight is the brightest of the twilight phases. How is it defined and when does it start and end? What are civil dawn and civil dusk?
Northern and Southern Lights
What causes these colorful and dramatic light displays in the sky, and when and from where can you see them?
Nautical Twilight – Nautical Dawn & Dusk
Nautical twilight is the second twilight phase. How is it defined and when does it start and end? What are nautical dawn and nautical dusk?
Astronomical Twilight – Astronomical Dawn & Dusk
Astronomical twilight is the darkest of the twilight phases. How is it defined and when does it start and end? What are astronomical dawn and astronomical dusk?
Lunar Eclipse: Red Moon
Find out why a totally eclipsed Moon turns a shade of red.
Astronomical Glossary - Terms & Definitions
What do astronomers really mean when they use those technical terms?
What Are Moonbows?
Moonbows occur when the Moon’s light is reflected and refracted off water droplets in the air.
What Is Dusk?
Dusk generally refers to the transition from sunset to nighttime, and the term is often used as another word for evening twilight. However, science defines dusk on the basis of the angle that the Sun makes with the horizon.
What Is Dawn?
Dawn generally refers to the transition from night to day as the morning twilight brightens the sky. However, there is also a formal definition that refers to specific moments during that transition.
The Moon Illusion
Some days, the Full Moon at the horizon looks larger than a normal Full Moon. Does the Moon really change size or is this an illusion?
The Blue Hour
The blue hour in the morning and evening is a favorite with photographers. How is it defined? When does it start & end? Explanation with times, degrees & photography tips.
Halos, Sundogs and Light Pillars
These are atmospheric phenomena created by the reflection and refraction of light by ice crystals in the atmosphere.
Why does the sky turn red during sunrise and sunset?
Also known as false dawn, zodiacal lights are rare optical phenomena that occur around sunset and sunrise in early spring and late fall.