Research summary
The Ecliptic and the Zodiac
- NASA describes the ecliptic as the imaginary plane that contains Earth’s orbit around the Sun.
- The Sun’s apparent yearly path across the sky lies in that plane.
- Zodiac longitudes are measured along it, which is why it is the geometric basis for the 30-degree signs.
Citation
https://www.nasa.gov/image-article/plane-of-ecliptic/
Source overview
NASA explains the ecliptic as the imaginary plane containing Earth’s orbit around the Sun and notes that the Sun’s apparent annual path lies in that plane.
What the source establishes
How Earth’s orbital plane creates the Sun’s apparent path and the geometric basis for zodiac coordinates.
Limitations
The source supports the astronomy or calendar claim described above. It does not validate astrological personality interpretations or predictive claims.
Practical meaning
That way we can cite scientists for what’s measurable in the sky, and still say clearly when we’re describing astrological symbolism.
Editorial note: Astrological meanings on this page describe traditional interpretations. They are not presented as scientifically proven personality facts.