Yes, astronomical dawn is defined as the time when the geometric center of the Sun is at 18 degrees…
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How to Visualize the Solar System as the Earth Orbits the Sun
I think that what you are looking for is a way to show what the orientation of the Sun…

Alignment of Stars in Orion’s Belt and Observer Perspective
I believe that what you are seeing is the difference between observing the stars in Orion’s belt when this…

That Bright “Star” in the Western Evening Sky is Venus
The bright planet Venus is an “evening star” these days, appearing in the western sky about 20 degrees above…

How Long Does a Full Moon Last?
Technically, the point at which the Moon is “full” lasts only an instant. To the naked eye, though, the…

Bright Object in the Evening Sky Suffolk Virginia
Perhaps you are seeing the planet Venus, which would be in the W/SW sky setting right around 8PM in…