A good explanation of the celestial event known as the transit of Venus across the sun can be found in this article in the Guardian, and I shall quote directly from it as it explains the phenomenon better than I can:
‘A transit of Venus occurs when the planet and Earth, whose paths round the Sun tilt at slightly different angles, line up exactly where their orbits cross. This occurs only four times every 243 years, in pairs separated by eight years. Only six transits of Venus are known to have been observed (though claims are made for earlier observations by Persian astronomers) with the last, in 2004, watched by millions who used telescopes to project images of the Sun's disc and the dot of Venus on to cards or electronic monitors. After this year's, the next will be in 2117 and then 2125. When the previous pair occurred, Queen Victoria was on the throne.’
The transit has been very important in developing an understanding of the relationship between the Earth and the sun, and the transits in the 18th century caused the launch of major scientific expeditions as set out in a wonderful book called Chasing Venus.
I first came across the transit when watching The Sky at Night in 2004. People from Britain will be very well aware of this television series which has been running on BBC TV since 1957. For most of its time, the Sky at Night was presented by an extraordinary chap called Sir Patrick Moore. Sir Patrick was an eccentric man, a very talented astronomer and musician and a gifted communicator. The BBC broadcast a programme on the 2004 transit live from Sir Patrick’s house which was called Farthings. An excerpt from the programme can be seen here (this may only be viewable in the UK.) The programme features the astrophysicist and guitarist Brian May who was a close friend of Sir Patrick.
My original thoughts when starting to write the song called The Transit of Venus Across the Sun was to make the song about the 18th century scientific expeditions. However, my mind kept coming back to the life of Sir Patrick Moore and so I changed course and decided to write about him.
Sir Patrick had a fascinating life and there were many stories that would have been worth telling in song. Some of his political views were certainly reactionary and this was not an area I wished to explore in any way, but he was very much a person of his time and, for me, the positive aspects of his life far outweigh the negative.
In the end, The Transit of Venus became almost a love song. Sir Patrick had only one love affair in his life, a woman called Lorna who was killed in the Second World War. Sir Patrick stated that he thought of Lorna every day, even in later life and that he could love nobody else. In the song, the transit becomes a metaphor for Lorna’s brief life, with Sir Patrick later setting a course for the stars and reaching out for far things.
In the 2004 programme, Sir Patrick can be heard saying that this is the only time he will see the transit. In the end, Sir Patrick lived just long enough to see the second transit of the 21st century pair in 2012. There is an interesting article here on the glimpse that Sir Patrick had of the 2012 transit.
When we were recording the song, David had an idea which led to a mention of somebody who was related to a character from another BBT song. We enjoy finding and following the connections between the stories we tell in our songs.