Astronomer and historian, particularly interested in light pollution and dark skies. Author of three books on the history of astronomy, “The Lost Constellations”, “Uncharted Constellations” and “Mystery of the Ashen Light of Venus”. Runs a consultancy business on light pollution and astronomy.
Professor of astronomy at the University of Regina in Saskatchewan, Canada. Campaigner for dark skies and regulation of reflective satellites. They are also a farmer, and regularly post updates on their farm’s animals.
Technologist interested in natural hazards, Earth observation, climate, data science, open data, low-cost technology, human rights and tech ethics. Founder of DisasterTech, maintainer of OpenSpaceData.org, host of the Hotspot podcast.