I went to America’s largest gathering of astrologers. It was a battle over how to read the stars

Now a $15bn industry, astrology is more mainstream in the US than ever. But its practitioners are still debating: who gets to have authority on the celestial bodies?

“The dwarf planets change everything,” said the woman with the smart haircut as she made a mind blown gesture with her fingertips, temples to air. I am at the United Astrology Conference, the largest professional gathering of astrologers in the world, in downtown Chicago. Around me, vendors are…