The solar apex, or the apex of the Sun's way, refers to the direction that the Sun travels with respect to the local standard of rest. This is not to be confused with the Sun's apparent motion through all constellations of the zodiac, which is an illusion caused by the Earth's orbit.
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This article is an automated import of the Wikipedia article "Solar apex", available at https://en.wikipedia.org/wiki/Solar_apex . Text is licensed under CC BY-SA 4.0.