What’s the difference between astronomy and astrology?

Although astronomy and astrology are historically related and many individuals were interested in both, there is today no connection between the two. Hence two different USENET newsgroups exist: sci.astro (for the former) and alt.astrology (for the latter). DO NOT CONFUSE THEM.

Astronomy is based on the laws of physics (and therefore mathematics) and aims at describing what is happening to the universe based on what we observe today. Because the laws of physics are constant (as far as we can tell), astronomy can also explain how the universe behaved in the past and can propose a limited number of possible scenarios for its future (see FAQ entry about Big Bang).

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