Quick, plain-language answers
Zodiac and Astrology Questions
Start with a direct answer to a common question, then follow the links when you need the full explanation.
Signs and dates
Are zodiac dates exact?
Why sign-change times vary by year and time zone.
Do zodiac signs change?
What changes, what does not, and why systems get confused.
Is Ophiuchus a zodiac sign?
How constellation boundaries differ from zodiac signs.
What is a Sun sign?
The placement most people mean when they ask for a zodiac sign.
Birth charts
What are the Big Three?
Sun, Moon and rising sign—and why they are still only part of a chart.
What is a Moon sign?
How the Moon placement differs from a Sun sign.
What is a rising sign?
Why the Ascendant needs an accurate birth time and place.
Astrology and astronomy
Are astrology and astronomy the same?
No. Learn where their language overlaps and where the disciplines differ.
Full comparison guide
Signs, constellations, the ecliptic and scientific versus interpretive claims.
Need more than a short answer?
Use the beginner learning path if you are starting from scratch, the glossary for a term you do not recognize, or the research library for source-backed astronomy and calendar context.