(Note: I am not worrying about spoilers in a book from 1975. If they worry you, don't read this review.)
This is a book that lies on many levels, as does this sentence.
The squib on the front cover, the blurb on the back cover, and the inside-the-cover first page blurb all give the impression that _Galaxies_ is a science fiction novel set in the year 3902.
This is a lie.
It is not, and Malzberg makes this clear in the book's first sentence. "To define terms at the outset," he writes, "this will not be a novel so much as a series of notes toward one."
This too is a lie.
_Galaxies_ is a "realistic" or "mainstream" novel. More specifically, it is a deconstructive novel, which comments on itself, on science fiction, on writing, and on its purported author (more about that in a moment) as it goes along, mostly acerbically, though in all cases with a certain affection.
The conceit, the plot if you will, of this novel is the story of an unnamed science fiction writer, who has a contractual obligation to a publisher to write a novel called _Galaxies_, and is unable to do so -- because, he explains, the novel could not even be written until the fortieth century.
The forty-nine "notes" (in a 128-page novel that begins on page 7, so they average a bit over two pages apiece) summarize, with occasional flashes of detail, the story of Lena, the only crewmember of _Skipstone_, an experimental craft with a "tachyonic" FTL drive and a cargo of dead people, packed in gelatinous stuff, in the hopes that the radiations (he uses the term "ultra-violet" for these, but there are many questionable scientific terms here, so let it pass) will restore them to life. They were all very wealthy in life, and in their wills established and funded The Bureau, the closest thing to a government the human race has in 3902 CE; the Bureau's mission is to resurrect them.
The ship accidentally falls into a "black galaxy" -- a huge black hole, in other words. Ignoring the tidal forces that would tear it, its cargo, and Lena to atoms, Malzberg (or the fictional author of _Galaxies_; let us call him M, as he does once in a discussion of other writers like A, B, and C) describes, in the notes, how Lena reacts to the ongoing fall: by suffering, mostly, but also by going, perhaps, a bit insane. She experiences (or seems to) one thousand consecutive lives, from all over human history, thus subjectively experiencing seventy millenia of time, at the end of which she has come, more or less, to grips with her situation.
Malzberg, it must be noted, wrote -- masterfully -- a kind of science fiction that dwelt less on the wonders of Technology and of the Future and of the Universe, and more on the internal workings of the people who lived with these things. He was, in the first half of the 1970s, possibly the most controversial writer in science fiction: some praised him to the stars, and nominated him for awards, thinking him, perhaps, the next logical step after SF's "New Wave" of the '60s; others lambasted him for what they saw as morbidity and perversion (many of his novels had sex in them, which was still pretty rare in SF in 1975). In no way could he have been called an upbeat writer. In _Galaxies_ he examines the psyche of a writer who may or may not be very much like himself, his sense of superiority and unjust failure, his grappling with the story he cannot write, and his innate pessimism. Along the way, M describes the mechanics by which he would, could he actually write it, propel the novel from its (very early) crisis to its conclusion, as well as tactics for padding out the story to the required word count.
Malzberg, then, dwells on M's dwelling on Lena's dilemma in a way that he simply _could not_ have done in a more mimetic or traditional style of novel. He gives us numerous facts about Lena, but never really gives us her interiority. Though he gives a few flashbacks, much of we know of her personality (and M freely admits that it is in some ways a very shallow personality, designed not to take attention off the novel's central conceit and conflict) is what she says about herself, but is she to be trusted? She may be mad, she is _probably_ mad. She is hearing the voices of the dead in the cargo hold, as if the difference between life and death has been erased in this place that is not a place. She awakens some of the ship's "cyborg" engineers -- really pure machines, but with the memories of actual humans: the first one turns out to "be" her former mentor and lover. He advises her to accept her situation, and commits suicide by staring out the porthole into the twisted or absent spacetime inside the black galaxy. Then she awakens three more, who -- as M is careful to tell us -- are linked thematically to the "comforters" of Job, who also, ultimately, suicide.
But there is much more. There is a great deal of excuse-making by M, explaining what _Galaxies_ might have been like had he been able to write it. He comments on the lack of literary value of his fellow SF writers' work. He tells how the idea for _Galaxies_ came from a pair of articles He explains the techniques he would have used, had he used them, to tell Lena's story. He gives significant background information about how the Bureau -- and humanity -- became what they have become in the fortieth century. He provides whole chapters of expository lump, describing (M's understanding of) the science behind black galaxies, pulsars, and other things.
And again, any and all of these things may be lies. It is difficult to sort out where M is being truthful and where he is being disingenuous and self-serving or simply defensive. The whole novel is, after all, M's _apologia_ and excuse-making for not writing the novel he has contracted to write.
In the end, Lena consults the dead -- not for advice, but in hope of gaining their approval of what she has already decided to do. Because the gravitational forces of the black galaxy will not allow the ship's conventional drive to accelerate to the speeds at which the tachyonic drive is intended to be engaged, she will engage it directly, without that acceleration. She has no way of knowing what will happen; the "cyborgs" and the dead have suggested that she may simply destroy the Universe, or, failing that, may come out anywhere and anywhen in spacetime.
When she does so, M provides, then rejects several possibilities for denouements, finally settling on this: the ship appears over Ridgefield Park, New Jersey, and the consciousness of Lena and the dead are sublimated into that village's fifteen thousand humans, and there the notes end, on a note as gnomic as they began: "...from all the Ridgefield Parks of our tim we will assemble to build the great engines which will take us to the stars . . . and some of the stars will bring death and others will bring life and then there are those which will bring us nothing at all, but the engines will continue, they will go on forever.
"And so, in a fashion, after our fashion, will we."
When I first read _Galaxies_ (Malzberg's novel, not M's unwritten novel) shortly after it came out in 1975, I thought that this was a hopeful ending. Today, I think it hopeless -- but I am not sure of this.