Category Archives: Orbis Tertius

01. Orbis Tertius | 6. Full circle | d. figure viii.



The print version of I Hear a New World 01. Orbis Tertius will be included in the exhibition The Slow Burn curated by Euan Macdonald at Ditch Projects, Springfield, Oregon from 14 March 2015.

01. Orbis Tertius | 5. The horizon of our concerns | d. Your uncertain disk ii.

ii. The Lunar Society of Birmingham, an informal gathering of many of the prominent figures of the Midlands Enlightenment, would meet monthly around the time of the full moon. Founded by Erasmus Darwin, its members included Joseph Priestly and John Baskerville, inventor of the font used in the print version of this project.

01. Orbis Tertius | 5. The horizon of our concerns | d. Your uncertain disk i.

i. On the morning of our departure for Rye, we heard on the radio of new evidence emerging in support of the “giant impact hypothesis”, an idea that attempts to explain the creation of the Earth’s moon as the result of a collision between our planet and Theia¹ — a smaller, Mars-size planet — four and a half billion years ago. The idea had long been considered problematic due to the similarities between the chemical makeup of Earth and its moon: were it formed from the remnants of another planet, there would be a difference. Recent studies of oxygen isotopes in moon rock however, had found significant-enough differences to elevate the “giant impact hypothesis” to a new level of plausibility.

Giant impact

¹ Theia, the Titanic mother of Selene (the moon) was goddess of — among other things ­— glitter.