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Friday 19 July 2019

Part 1. "Who announces the ages of the moon?" (Amergin, from the 12th century Irish Book of Leinster)

We will all be moon gazing on 20th July, 50 years since the first man stepped onto the moon, that "mythical " body watched in the night skies for  thousands of years.  Just 360 years ago, like Galileo and other contemporary astronomers,  Thomas Harriot, mathematician and navigator, with his splendid new telescope drew this map of the surface of the moon, although unlike Galileo, author of Sidereal Nuncio (or Starry Messenger)  in 1610, he never published his discoveries.  His friend and patron Sir Walter Raleigh  ended in the Tower, so maybe Harriot was being circumspect in uncertain political times.

Thomas Harriot's map measures just 6 ins across, and shows the 5-day-old moon's surface, 
as observed on 26th July 1609      © Petworth House Archives.

In 1679, the best map of the moon's surface for many years was compiled by Giovanni Domenico Cassini, the Director of the Paris Observatory, using a 34 ft telescope, and this was engraved for publication by Claude Mellan and widely copied.  


Cassini's Map of the moon, showing Cape Heraclides  and Sinus Iridium,   c. 1679
(wikimedia commons)

The light from the moon itself also contributed to the sciences from which the capacity for travel into space developed.  In eighteenth century Britain, the full moon lit the way for men of ideas to travel to meet together,  like the "Lunar Society" of Birmingham.  Its key members were Erasmus Darwin, Matthew Boulton, James Watt, Josiah Wedgwood and Joseph Priestley (discoverer of oxygen);  there must have been many such meetings elsewhere and on other continents, made practicable by moonlit nights. 

In seventeenth century Europe, the moon became not just a worldwide focus of ancient myth and legend in different cultures, or a universal practical guide to time and navigation, but now, as seen through the  astronomers' new telescopes, an intriguing subject of space travel stories, another aspect of this new spirit of scientific  exploration.  It becomes another New World, often a distant Utopia. 

One of Ben Jonson's court masques for James I in 1620 was News from the New World discovered in the Moon, (based on a classical Greek tale), but the bestseller of its day, The Man in the Moone, 1638, was written probably in the late 1620s by Francis Godwin, the Bishop of Hereford using a pseudonym.    

An early astronaut is transported to the moon by flying geese.  
 Bristol Delft plate c. 1740  Glaisher collection  © Fitzwilliam Museum 

It is also in the later seventeenth century that sees the discovery of the elephant in the moon --  but more of that and other tales in my next blog.

  


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