4. BLACK HOLE BLUES
In Black Hole Blues and Other Songs from Outer Space, which crowns the year’s finest science books, cosmologist and novelist Janna Levin tells the story of the century-long vision, originated by Einstein, and half-century experimental quest to hear the sound of spacetime by detecting a gravitational wave. This book remains one of the most intensely interesting and beautifully written I’ve ever encountered — the kind that comes about once a generation if we’re lucky.
Everything we know about the universe so far comes from four centuries of sight — from peering into space with our eyes and their prosthetic extension, the telescope. Now commences a new mode of knowing the cosmos through sound. The detection of gravitational waves is one of the most significant discoveries in the entire history of physics, marking the dawn of a new era as we begin listening to the sound of space — the probable portal to mysteries as unimaginable to us today as galaxies and nebulae and pulsars and other cosmic wonders were to the first astronomers. Gravitational astronomy, as Levin elegantly puts it, promises a “score to accompany the silent movie humanity has compiled of the history of the universe from still images of the sky, a series of frozen snapshots captured over the past four hundred years since Galileo first pointed a crude telescope at the Sun.”
Astonishingly enough, Levin wrote the book before the Laser Interferometer Gravitational-Wave Observatory (LIGO) — the monumental instrument at the center of the story, decades in the making — made the actual detection of a ripple in the fabric of spacetime caused by the collision of two black holes in the autumn of 2015, exactly a century after Einstein first envisioned the possibility of gravitational waves. So the story she tells is not that of the triumph but that of the climb, which renders it all the more enchanting — because it is ultimately a story about the human spirit and its incredible tenacity, about why human beings choose to devote their entire lives to pursuits strewn with unimaginable obstacles and bedeviled by frequent failure, uncertain rewards, and meager public recognition.
Indeed, what makes the book interesting is that it tells the story of this monumental discovery, but what makes it enchanting is that Levin comes at it from a rather unusual perspective. She is a working astrophysicist who studies black holes, but she is also an incredibly gifted novelist — an artist whose medium is language and thought itself. This is no popular science book but something many orders of magnitude higher in its artistic vision, the impeccable craftsmanship of language, and the sheer pleasure of the prose. The story is structured almost as a series of short, integrated novels, with each chapter devoted to one of the key scientists involved in LIGO. With Dostoyevskian insight and nuance, Levin paints a psychological, even philosophical portrait of each protagonist, revealing how intricately interwoven the genius and the foibles are in the fabric of personhood and what a profoundly human endeavor science ultimately is.
Scientists are like those levers or knobs or those boulders helpfully screwed into a climbing wall. Like the wall is some cemented material made by mixing knowledge, which is a purely human construct, with reality, which we can only access through the filter of our minds. There’s an important pursuit of objectivity in science and nature and mathematics, but still the only way up the wall is through the individual people, and they come in specifics… So the climb is personal, a truly human endeavor, and the real expedition pixelates into individuals, not Platonic forms.
For a taste of this uncategorizably wonderful book, see Levin on the story of the tragic hero who pioneered gravitational astronomy and how astronomer Jocelyn Bell discovered pulsars.