Why are constellations like Leo obscured during the Northern Hemisphere summer months?
Answer
The Sun is passing through those Zodiacal constellations, obscuring them by daylight.
A Zodiac constellation is only truly visible at night when the Sun is not in that region of the sky. When the Sun is in Leo during the summer, that portion of the sky is washed out by sunlight.
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The Ecliptic: Crash Course Kids #37.2 - YouTube
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