The first recollection I have of one of my all time heroes – the astronomer Carl Sagan – was when he undertook, for the Royal Institution, the Christmas lecture series at the end of 1977. As a fascinated 11-year-old I absorbed it all and I still remember his demonstrations of lunar cratering with the aid of marbles “except you don’t find marbles down craters”, as well as his talk around the still-new Viking Mars missions and the just-launched Voyager mission with the interstellar record of music and messages to be a present for any future aliens who might find it.
A precis of Sagan’s lecture is just one of the thirteen summarised in this lovely little book – a great present for Christmas – which brings back historic lectures, aimed at young audiences, on the subject of space and time, ranging from 1881 to 2015. The book is a fascinating mixture of lecture history, science, RI archive content such as handwritten letters, and photographs and transcripts. The book explores what we thought we knew then and what has been discovered since. The emphasis of the lecture series has always been ‘don’t just tell – show’ – which is brought out well in the book with drawings and photographs of how children from the audience, from decade to decade, have been invited down to get involved in experiments in the Faraday Lecture Theatre.
The earlier ones – Robert Stalwell Ball of 1881, Herbert Hall Turner of 1913 are lovely period pieces, indeed Ball’s own full lecture notes – available in his book “Star-land” – are full of the more poetic language of the age. Compiler Colin Stuart compares what was believed then, with what is known now – for example the common belief in 1881 that the lunar craters were volcanic in origin, and the Martian Canals controversy – active from the late 19th to the early 20th century – was a common theme returned to in the earlier lectures.
Classic lectures by the giants of the mid-20th-century follow by James Jeans, Harold Spencer-Jones and a team led by Bernard Lovell, and as we move into the space age proper the latest lectures by Monica Grady and Kevin Fong continue to find ways of showing cutting-edge science to a young audience. In the final lecture Kevin Fong introduces British astronaut Tim Peake via video screen to talk to the audience – live- from orbit in the International Space Station, a sight that Robert Ball would no doubt have loved to have witnessed.
This is a great and unusual little book for all ages to enjoy.
13 Journeys Through Space and Time: Christmas Lectures from the Royal Institution by Colin Stuart, with a foreword from British ESA astronaut Tim Peake. 224pp, Michael O’Mara publishing