On Sunday Rosalind Park talked to the Essex Egyptology Group about the Dendara Zodiac ceiling, and astrology in Ancient Egypt. The Dendara Zodiac was originally in one of the chapels on the roof of the Hathor Temple at Dendara. When discovered by Napoleon's expedition in 1799 it was removed from the temple (with gunpowder!) and brought back to France. It's now on display in the Louvre (see the picture below that I took when I visited in 2011).
The first planet orbiting a star other than the Sun wasn't discovered until 1992 and since then the subject of exoplanets has gone from being something you argue about the existence of to a rapidly expanding field with new discoveries all the time. The experts who discussed exoplanets on In Our Time were Carolin Crawford (University of Cambridge), Don Pollacco (University of Warwick) and Suzanne Aigrain (University of Oxford).
Comets are an astronomical event/phenomenon that have exerted quite a hold on the imagination of people in the past & it's only relatively recently that we have any understanding of what they are or why they happen. The In Our Time programme that discussed them primarily focused on the astronomy but did touch on the omens and portents side of them as well. The experts on the programme were Monica Grady (Open University), Paul Murdin (University of Cambridge) and Don Pollacco (University of Warwick).