Astronomy Picture of Day: Movie: Green Flash over Italy# Astronomy - 天文
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Movie: A Green Flash Over Italy
Credit & Copyright: Danilo Pivato (Beyond the Moon)
Explanation: How could the Sun turn green? Difficult to observe, the
momentary green flash above the rising or setting sun has been documented as
a phenomenon caused by the atmospheric bending or refraction of sunlight.
Like a weak prism, the Earth's atmosphere breaks white sunlight into colors,
bending red colors slightly and green and blue colors through increasingly
larger angles. When the sky is clear, a gree
Credit & Copyright: Danilo Pivato (Beyond the Moon)
Explanation: How could the Sun turn green? Difficult to observe, the
momentary green flash above the rising or setting sun has been documented as
a phenomenon caused by the atmospheric bending or refraction of sunlight.
Like a weak prism, the Earth's atmosphere breaks white sunlight into colors,
bending red colors slightly and green and blue colors through increasingly
larger angles. When the sky is clear, a gree
