LITERARY REVIEW

ACCORDING to astronaut Buzz Aldrin, the moon is mostly composed of greyish dust that smells of extinguished pyrotechnics which makes your eyes water.

Hardly an attractive environment, but we shouldn’t be fooled by first impressions. Were it not for the Moon, there would be no planet Earth. Or to be more precise, we wouldn’t even exist.

In exact and poetic prose, science writer and journalist Rebecca Boyle explains how many millennia ago – the timescale is still approximate – just how the Moon was formed from the same cosmic debris that made our world. Due to its gravitational impact, the Moon was responsible for pulling early fish-like creatures out of the Earth’s oceans and on to the shore.

It was from these that every creeping, crawling thing that inhabits our planet, including ourselves, developed. It is enough to give most of us nightmares.

The Moon is also Earth’s timekeeper. It continues to give us not only our days, but our months, seasons, and years. You may have thought that the Sun was in charge but, as the author explains, it is the pull of the Moon’s gravity on the Earth that holds our planet in place.

Without the Moon stabilising our tilt, at 23.4 degrees, we would wobble wildly and erratically, dramatically affecting our seasons and climate. In such a scenario, our planet would move from no tilt (meaning no seasons) to a large tilt (extreme weather and even ice ages). It is thanks to the Moon that the Earth remains a place that is more or less habitable – at least for now.

Prehistoric people weren’t aware of what went on in outer space, but they had worked out that the lunar cycle – the length of time it takes for the Moon to circle the Earth – governed not only their days but the seasons, too.

One of the most exciting passages in Rebecca Boyle’s book concerns the fairly recent discovery of 10,000-year-old pits dug near Crathes Castle, Aberdeenshire, in Scotland.

They are a sort of inverted or upside-down version of Stonehenge (but 5,000 years older), a Mesolithic lunar timepiece that allowed hunter-gatherers to work out which week in any year the salmon would be leaping in the River Dee, or when red deer might trot over the horizon.

And that’s not forgetting the influence on the regular arrival of new Mesolithic babies to be nurtured into a new generation of hunter-gatherers. Though more research needs to be done, it also looks that where there was not much natural daylight in communities in Northern Scotland, women tended to begin their menstrual cycles at the Full Moon.

This meant that they were most fertile at the New Moon, that dark time of the month when early man was less likely to be out hunting and gathering, and more likely to be at home making Stone Age love.

For those interested in testing this phenomenon, it just so happens that yesterday was a New Moon. Even now, in our age of electric light pollution, there is some evidence to suggest that women are still more likely to begin their monthly cycle at the Full Moon.

Boyle also investigates the old story about the links between the full moon and madness – the so-called “lunatic” effect. It turns out there is something in it: a 1990s survey reported that 81 per cent of mental health practitioners have observed a direct correlation between odd behaviour and certain times of the month.

At the very least, many of us find it hard to sleep when there is a full moon, which may well result in the kind of risky behaviour – driving too fast, drinking too much, yelling at annoying strangers – that lands many of us in A & E.

There is also emerging evidence that aneurysms are more likely to pop at either the Full or new Moon, thanks to the fact that it is at these points in its 29-day cycle that the Moon is most closely aligned with the Sun, which means that it exerts its strongest gravitational pull.

Given the extraordinary power that the Moon has on our everyday experience here on Earth, it is no wonder that earlier civilisations treated it not as a “withered, sun-seared peach pit”, to quote one early Apollo astronaut who orbited without landing, but as nothing less than a full-blown deity.

Particularly fascinating is the tale of Enheduanna, the Bronze Age high priestess, who used hymns to the Moon gods to bind the city-states of Sumeria into the world’s first empire.

There have been many books written about the Moon, but Rebecca Boyle’s feels especially timely. As the geo-political balance of our world shifts, the “space race” is being re-run with new players including Japan and India. This time around, however, the aim is not so much patriotic flag planting on the lunar surface, but economic advantage.

The Moon’s soil contains oxygen, silicon, aluminium, and iron, all of which can be refined into valuable things such as fuel, building materials and, ironically, solar panels.

Whichever nation manages to extract and exploit these first, will hold the balance of power in what is shaping up to be the next Cold War.

– Our Moon: A Human History by Rebecca Boyle is published by Sceptre, 336pp