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What causes the phenomenon of halos around the Sun or Moon?
A: Solar flares
B: Magnetic field
C: Refraction and reflection of light
Your Answer:

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Description:

The correct answer is:

✅ Refraction and reflection of light

Why?

Halos around the Sun or Moon are caused by ice crystals in high-altitude cirrus clouds:

Refraction: Light bends passing through hexagonal ice crystals, creating a 22° halo (most common).

Reflection: Some halos form when light bounces off crystal surfaces (e.g., sundogs).

Key Features:

Colors: Often faintly rainbow-like (red inside, blue outside).

Weather Sign: Often signal approaching warm fronts (and rain/snow within 24–48 hours).

Why Not the Others?

Solar flares: Affect space weather, not atmospheric optics.

Magnetic fields: Influence auroras, not halos.

Fun Fact: The same ice crystals cause sun dogs, light pillars, and circumzenithal arcs! 🌞❄️

Spot a halo? Rain might be coming! 🌧️☁️

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