NASAのインスタグラム(nasa) - 3月8日 01時15分

What’s up in the sky this month? You’re in for a real treat if you’re able to get away to a dark sky location on a Moonless night this month. The Zodiacal light and the Milky Way intersect!
The Zodiacal light is a faint triangular glow seen from a dark sky just after sunset in the spring or just before sunrise in the fall. The more familiar Milky Way is one of the spiral arms of our galaxy.
What we’re seeing is sunlight reflecting off dust grains that circle the Sun in the inner solar system. These dust grains journey across our sky in the ecliptic – the same plane as the Moon and the planets.
Credit: NASA
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