What are crescent moon and crescent moon? Why do these two natural phenomena occur?

What is a crescent moon? What is a crescent moon? How are these two phenomena different? Let's find out together!

Have you ever seen a strange ring of light around the moon and wondered what it was? A lunar halo or lunar halo is an optical illusion that creates a large ring of light around the moon. This striking and often beautiful halo around the moon is caused by the refraction of moonlight from ice crystals in the upper atmosphere.

In effect, these floating or falling ice fragments mean that the atmosphere is transformed into a giant lens causing arcs and halos to appear around the moon or sun depending on whether the effect occurs during the night or day.

This effect is so striking that it has spawned countless folk legends and superstitions, and has been used to predict bad weather, albeit not with complete accuracy. So how are crescent and penumbra moons formed?

Halo Moon.

Moon halo: Is the phenomenon of a white ring of light appearing around the Moon with a radius of about 22 degrees (diameter width 44 degrees).

When the weather is very dry, with little water vapor, the density of ice particles in the upper atmosphere is very low. When entering the atmosphere, the light from the Moon (which is illuminated by the Sun) will pass through these hexagonal crystals and be refracted. This process causes a phenomenon similar to when passing through a diverging lens and creates the phenomenon of the Moon halo.

When seeing the halo moon phenomenon, people predict that the weather in the following days will be hot and dry.

Moonlit.

Moon halo : The phenomenon of the Moon's halo being a multi-colored halo (somewhat like a rainbow) and not completely separate from the bright disk of the Moon.

A parallax moon appears when there is a thick layer of clouds in the upper atmosphere, containing a lot of frozen water, the light from the moon passing through is refracted many times and clearly dispersed instead of forming a single refraction angle.

When seeing the phenomenon of the Moon, people predict that the following days will be cloudy and it is likely to rain soon.

However, the saying "The Moon haloes the dry sky, the Moon scatters the rainy sky" is only relative. Because, depending on the density and number of clouds in the atmosphere, sometimes we can see the Moon appearing both "halo" and "scatter" at the same time. In addition, when there is a "Moon halo", the weather is hot, but this weather phenomenon can also be the cause of pressure differences in the atmosphere, causing wind, storms and rain.

The crescent moon and the crescent moon appear at the same time.

The Myths and Cultural Significance of the Lunar Halo

According to folklore, seeing the Moon's halo is associated with upcoming unstable weather, especially in winter.

This is often proven to be true due to the phenomena behind these halos. This is because cirrus clouds sometimes indicate an approaching warm front, which can be a low pressure system, a storm that brings sudden drops in temperature, heavy rain, hail, and even lightning.

Because cirrus clouds often portend precipitation within the next 24 hours, the atmospheric optical illusions they cause have been incorporated into "weather lore" and became an early method of empirical weather prediction before the development of scientific measurement.

Another folk idea associated with the Moon's halo is that by counting the stars surrounded by the halo, one can tell how many days until bad weather arrives.

More stars mean more time until rain starts, and fewer stars mean bad weather is coming.