Stephen Baxter is a master of contemporary science fiction, as well as the rightful heir to the legacy left behind by Arthur C. Clarke, but based on the evidence of this collection, his forte is the long form, not the short story. It could also be reasonably argued that this volume is simply too long, that it would have been a strong collection had its 400-plus pages been pared down to 300, and might have been a masterpiece at around the 200-page mark. There's no lack of five-star stories here, but there are just as many that fall into the three- and four-star camp. And although there are no abject failures to be found, this turns into a tedious read at about the halfway mark, which seems to support my assertion that while the contents of the refrigerator are tasty, the kitchen sink should probably have been excluded from the recipe.
Many of these stories are related to Baxter's "Manifold" series of novels. Others are directly or tangentially related to other novels of his. And others more or less stand on their own. In more than one instance, the reader is left with the sense that a given story might have been a sketch or outline for a potential novel which was then abandoned in its shorter form, and this can be particularly frustrating.
It doesn't help that things get off to a slow start. It's not until the sixth of the nearly two dozen stories here that Baxter really hits his stride, with "War Birds," an alternate timeline tale in which the Cold War has turned hot and the U.S. dominates a dystopian future. This is followed by "Sun-Drenched," describing a disastrous Moon mission, and especially notable for its normalization of same-sex attraction. "Sun God" is tangentially related to "Sun-Drenched," focusing on the same protagonist, and effectively blurring the line between multiverse theory and virtual reality simulations. The similarly-titled "Sun-Cloud" is unrelated, and tells the tale of a composite being who, challenged by her maverick sister, is plagued by doubts about the nature of her world. In "Sheena 5," a genetically-modified squid becomes the unlikely protagonist in a cautionary tale about Darwinism taken to its extreme. "The Fubar Suit" is one of the most original stories in this collection, and describes a woman's unorthodox efforts to preserve her life when disaster strikes during her exploration of a Trojan asteroid. "Refugium" is one of the many stories here -- and perhaps the most successful -- which attempt to offer possible solutions to the long-standing Fermi Paradox. "The We Who Sing" shares some similarities with "Sun-Cloud," describing the quest of an alien protagonist to try to understand the nature of the world in which she lives. The penultimate story in this volume, "Touching Centauri," helps to tie some of the previous stories together into a more cohesive whole, and is directly related to the author's "Manifold" series; a bit longer than most of the other pieces found here, it is arguably the single most satisfying.
These triumphs, unfortunately, are equally balanced by the low points, which include "Open Loops," which comes off as meandering and incongruous; "Poyekhali 3201," which is equally all over the map and lacking in impetus; "Dante Dreams," which rambles as well; "Huddle," which is based on a fascinating premise, but ends with a fizzle; the anti-climactic shaggy dog stories of "Lost Continent" and "Tracks"; "Barrier," which also limps to the finish line, as does the disappointing "Marginalia"; and "Spindrift," which comes off as inconsequential and perfunctory, lacking in the detail and development which might have turned it into a more compelling tale.
The rest of these stories fall somewhere in the middle. Honorable mention should, perhaps, go to the last piece in this collection, "The Twelfth Album," which describes an alternate timeline in which The Beatles stuck together long enough to complete one final studio album. Although this tale seems to have been shoehorned into the frame of this volume, it's an interesting enough piece to earn some praise by those who sit at the intersection of sci-fi and Beatles nerds.
In conclusion, hardcore fans of Baxter will, no doubt, want to read this sometimes trying collection despite its flaws. More casual readers and newbies may be better off starting with his "Manifold" series, or with one of his stronger stand-alone novels, such as "The Time Ships" or "Evolution.