Here are 89 books that The Door into Summer fans have personally recommended if you like
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I am an astronomer and college professor who loves science fiction. For many years, I have kept a webpage recommending science fiction stories and novels that are based on good astronomy. I love explaining astronomy to non-scientists, and I am the lead author of OpenStax Astronomy, a free online textbook for beginners, which is now the most frequently used textbook for astronomy classes in the U.S. I actually learned English at age 11 by reading science fiction comics and then books for kids, After many decades as a fan, I have recently realized a long-held dream and become a published SF author myself.
I think this novel, by physicist Gregory Benford, is one of the best fictional representations of how science is really done and of the real world of scientists and graduate students.
It is also an early exploration of the concept of tachyons, particles that cannot move slower or as slow as the speed of light but always have to go faster. (These have been proposed only in theory, but what makes them exciting is that they would travel backward in time.) In the book, that property enables people in the future to communicate with us in their past.
Another thing I like about this book is that some of his characters are thinly disguised (or not disguised) versions of real astronomers of the time.
The year is 1998, the world is a growing nightmare of desperation, of uncontrollable pollution and increasing social unrest. In Cambridge, two scientists experiment with tachyons - subatomic particles that travel faster than the speed of light and, therefore, according to the Theory of Relativity, may move backwards in time. Their plan is to signal a warning to the previous generation.
In 1962, a young Californian scientist, Gordon Bernstein, finds his experiments are being spoiled by unknown interference. As he begins to suspect something near the truth it becomes a race against time - the world is collapsing and will…
My great interests have been ships and space travel, and if one takes time to consider the similarities the parallels stand out. Ships, especially submarines, travel in a medium and through an environment that is hostile to human life. In space travel, the ‘ship’ becomes the only habitat in which we can survive for any extended period, leaving it without a space suit is a fatal move. I cannot claim to be an expert in closed environments, but it's a subject that has fascinated me throughout my life. Every ‘biosphere’ is unique and incredibly complex and depends on the symbiosis of an enormous number of living creatures right down to bacteria and even viruses.
This is the story that first got me interested in science fiction. Of course, we now recognise some of the flaws in the science, but consider that at the time of its writing steam propulsion was still in its infancy, most ships were still built of timber, and Verne envisaged a ship capable of indefinite travel beneath the ocean surface – something not even possible until the advent of nuclear power almost a century later. Even today Verne’s vision and the story he wove around it can inspire.
First serialized in a French magazine from 1869-1870, Twenty Thousand Leagues Under the Sea is an incredible adventure story that popularized science fiction throughout the world.
Professor Aronnax, a marine biologist, joins harpoonist Ned Land in search of a mysterious sea creature in the open ocean, only to discover that the beast is actually a submarine piloted by the enigmatic Captain Nemo. They are taken captive, thus beginning a strange undersea voyage from Antarctic ice shelves to the subterranean city of Atlantis, hunting sharks along the way.
With its sprawling, exotic plot and vivid descriptions, Jules Verne's epic underwater adventure…
Growing up, books weren’t just something I read—they were portals to futures filled with wonder, adventure, and possibility. There was something captivating about science fiction in particular: it was more than just space battles and shiny gadgets. It was about what the future could be—our potential, our challenges, and how we might navigate the unknown. Looking back, a few books and authors had a lasting impact on me, not just as a reader but as a writer. I’ll walk you through five that really stood out and shaped the way I see the world and, ultimately, likely inspired my series.
I love this book for the way it introduces you to the concept of time as both a journey and a prison. I first read it long before it was required reading in school, and I couldn’t get enough of it. Wells’ vision of the far future captivated me—his portrayal of a decaying world where humanity has split into two very different species made me think about the consequences of societal division.
The story left me pondering what our world might become if we fail to learn from our mistakes. I was not a fan of any of the movies in the last 50 years as they did nothing for the wonder that the novel painted in my mind. The haunting future of Wells’ storytelling is that it isn’t just about traveling through time—it’s about confronting the inevitability of change and decay.
A brilliant scientist constructs a machine, which, with the pull of a lever, propels him to the year AD 802,701.
Part of the Macmillan Collector's Library; a series of stunning, clothbound, pocket-sized classics with gold foiled edges and ribbon markers. These beautiful books make perfect gifts or a treat for any book lover. This edition of The Time Machine features an introduction by Dr Mark Bould.
The Time Traveller finds himself in a verdant, seemingly idyllic landscape where he is greeted by the diminutive Eloi people. The Eloi are beautiful but weak and indolent, and the explorer is perplexed by…
Captain Heron finds himself embroiled in a conflict that threatens to bring down the world order he is sworn to defend when a secretive Consortium seeks to undermine the World Treaty Organisation and the democracies it represents as he oversees the building and commissioning of a new starship.
As a former journalist-turned-lawyer and a recovering news junky, I’ve spent much of my life watching unhappy scenarios play out. But what’s always astonished me me is how, no matter how bad things get or how difficult the situation, there’s a spark of humanity, of kindness and compassion and optimism, that comes out in people at the most unexpected of times. Now, as an author and a parent, I find myself drawn to stories that remind me of that—that no matter how bleak life may look, how cruel or arbitrary the circumstances, there’s something good and beautiful and worth fighting for, not “somewhere out there,” but inside us.
Irreverent, hilarious, and surprisingly touching, this book is Terry Prachett at his best—the rapier-sharp wit, the brilliant satire, and, my favorite of all, the moments where his characters are shoved up against questions of morality and the choice whether to give in to ugliness and hopelessness or to hold onto a hardscrabble optimism.
Cynical, jaded Sam Vines may be one of my favorite examples of a character who stubbornly refuses to give up on believing that while the world might never be perfect, just maybe, if enough imperfect, barely-holding-themselves-together people try hard enough, it can be a little better than it was.
A beautiful new hardback edition of the classic Discworld novel.
Commander Sam Vimes of the Ankh-Morpork City Watch had it all.
But now he's back in his own rough, tough past without even the clothes he was standing up in when the lightning struck...
Living in the past is hard. Dying in the past is incredibly easy. But he must survive, because he has a job to do. He must track down a murderer, teach his younger self how to be a good copper and change the outcome of a bloody rebellion.
I became hooked into science fiction as a kid the day I read an illustrated book of 20,000 Leagues Under the Sea. From then on, science fiction became an important part of my reading repertoire. Having wide-ranging interests, I enjoy military techno-thrillers, Anglo-French naval warfare, Greek/Egyptian/Roman mythology, most sciences, history of religions, with an occasional novel that strays from the norm and adds a sparkle to my reading. Mary Stewart’s The Crystal Cave and The Hollow Hills are very close to my heart. Just shows that I’m different. After all, I must do something when I am not writing my own novels! Although I have an extensive library of modern science fiction works, I am fond of many oldies.
Told by a master storyteller I enjoy reading, this book grabbed me immediately and drew me inexorably into the main character’s life as an eternity technician.
Not a unique theme – man manipulating his future – but I liked the twist when all future is threatened for the love of one woman. I kept turning pages, wanting to know how my hero would reconcile forbidden love at the price of eternity’s end.
This is a thoughtful book that denied me peace until it ended. I liked the technical concepts revealed in the story and how they were woven into very human reactions. A lesson for our modern time?
A spellbinding novel set in the universe of Isaac Asimov’s classic Galactic Empire series and Foundation series
Due to circumstances within our control . . . tomorrow will be canceled.
The Eternals, the ruling class of the Future, had the power of life and death not only over every human being but over the very centuries into which they were born. Past, Present, and Future could be created or destroyed at will.
You had to be special to become an Eternal. Andrew Harlan was special. Until he committed the one unforgivable sin—falling in love.
I am an author of science fiction, as well as nonfiction, a singer/songwriter, and a Professor at Fordham University, and time travel has played a role in all of these endeavors. I’ve written four novels and numerous stories which feature time travel, several songs (for example, “If I Traveled to the Past”), and talk about it in my classes. The opportunity of going back in history and stopping a bad thing has always intrigued me, as has traveling to the future to see how things turn out. The paradoxes that can get in the way of that make thinking and writing and talking and singing about it even more fun.
Romance and love are of course great inducements to time travel, and have animated many a time travel novel and series. I like The Mindtravelerthe best. It combines the struggle for true love with an astute knowledge of physics, a keen eye for the academic landscape, and a witty sense of humor.
With more of her life behind her than ahead, Margaret Braverman, a physicist teaching at a small college, cannot help but regret the things she never quite got right. Most important among them was the tragic ending of her romance with her brilliant colleague Frank, something she has never gotten over. And, of course, it would be glorious to get even with that mean-spirited, conceited, womanizing Caleb Winter. After years of experimentation in the back room of her lab, Margaret has finally built a time machine. The key, she discovered, is in teleporting not the body but the mind. And…
Liam was orphaned at the age of two by a group of giant carnivorous insects called the chitin. Taken in by High Councilor Marcus and his wife, Lidia, Liam was raised with their older son, Randolf in New Olympia, the last remaining city on the planet Etrusci.
My name is Sara Jo Easton, and I’m the bisexual author of the Zarder novels, a fantasy series where a race of dragon-like creatures called Onizards learns to get past their prejudices. When I was at a book signing for my third book, The Blood of Senbralni, a strange man loudly declared I was part of an agenda to turn people to homosexuality and Satan with my evil dragons. To be clear, I am not and will never be affiliated with Satan. I made a vow that every book I wrote from that point forward would have at least one LGBTQ+ romance with a happy ending to annoy people like that man.
When it comes to fantasy books, it’s hard to narrow things down to only one book in Terry Pratchett’s Discworld series.
He was a master of satire and the use of asides to parody the tropes of fantasy while also telling compelling stories and building a world you could imagine visiting. If we’re going to annoy the people trying to ban LGBTQ+ books, though, I’d have to recommend starting with The Fifth Elephant.
As the kingdom of dwarves is in disarray over the disappearance of the Scone necessary to crown their king, a group of Night Watch detectives from a distant land must work together to solve the crime while dodging evil werewolves.
One of the detectives on the case is Cheery, a dwarf who causes waves for openly identifying as female (the dwarves follow logic similar to J.R.R. Tolkien’s dwarves in that every dwarf has a beard and gender…
They say that diplomacy is a gentle art. That its finest practitioners are subtle, sophisticated individuals for whom nuance and subtext are meat and drink. And that mastering it is a lifetime's work. But you do need a certain inclination in that direction. It's not something you can just pick up on the job. Which is a shame if you find yourself dropped unaccountably into a position of some significant diplomatic responsibility. If you don't really do diplomacy or haven't been to school with the right foreign bigwigs or aren't even sure whether a nod is as good as a…
My great interests have been ships and space travel, and if one takes time to consider the similarities the parallels stand out. Ships, especially submarines, travel in a medium and through an environment that is hostile to human life. In space travel, the ‘ship’ becomes the only habitat in which we can survive for any extended period, leaving it without a space suit is a fatal move. I cannot claim to be an expert in closed environments, but it's a subject that has fascinated me throughout my life. Every ‘biosphere’ is unique and incredibly complex and depends on the symbiosis of an enormous number of living creatures right down to bacteria and even viruses.
This book and the others, including The Globe, Darwin’s Watch, and Judgement Day, are wonderful in their mix of fantasy – Pratchett’s Discworld Wizards mixing it up in their quest to understand the “Round World” they accidentally created – and real science introduced and explained by Ian Stewart and Jack Cohen. The fantasy and the science are seamlessly interwoven in a way that make some complex subjects not just understandable but very readable. Like the explanation of exploring particle physics in the Large Hadron Collider by comparing it to a race that has never seen a piano, cannot see the piano, and try to determine its function and properties by hitting it and eventually pushing it out of a window five stories up and then naming the sounds it makes on hitting the ground…
When a wizardly experiment goes adrift, the wizards of Unseen University find themselves with a pocket universe on their hands: Roundworld, where neither magic nor common sense seems to stand a chance against logic. The Universe, of course, is our own. And Roundworld is Earth. As the wizards watch their accidental creation grow, we follow the story of our universe from the primal singularity of the Big Bang to the Internet and beyond. Through this original Terry Pratchett story (with intervening chapters from Cohen and Stewart) we discover how puny and insignificant individual lives are against a cosmic backdrop of…
I've been an avid reader of SF in general, and its sub-genre of time-travel, for most of my life, and have tackled this topic in my own writings as well. Time-travel tales often deal with inherent paradoxes, such as the Grandfather Paradox, which asks: If you go back in time and kill your grandfather, would you then never be born and therefore never commit the murder? If so, then your grandfather lives and you were born and . . . Such paradoxes boggle the mind and provide fascinating territory for SF authors to explore.
This is a novel that explores all the complexities and paradoxes and oddities associated with time travel. It takes place in a future world in which time travel is a part of life, and so must be monitored and regulated like any other technology. Because time travel holds such a huge potential for disaster, strict rules must be established and enforced. But what happens when somebody flaunts those rules for their own personal enjoyment? This novel explores these concepts in a wild, and often erotic, fashion.
This book really perpetuated my love of time-travel tales and all the complexities involved in a society where time travel is an accepted norm. It's a totally fun novel that deals with some truly existential concepts in an entertaining way and inspires that sense of wonder that fans of SF crave. It's one of those stories that stick with you for many, many years…
Time travel spelled problems for the couriers of the Time Service. Shuttling backwards and forwards over the centuries they had to be wary of creating paradoxes - like meeting themselves watching the sack of Rome, or sleeping with their own ancestors.
Of course, it also gave them the chance to amass wealth by the discreet use of their prior knowledge. The penalties were fierce and the Time Police implacable in their pursuit of lawbreakers. But it was still worth taking the risk.
Jud Elliot took it when he met the marvellous transemporal paradox called the Pulcheria. He couldn't resist her…
To hide a corporation’s failure to properly service a space ship, Captain Jonas Stryker is prosecuted but saved from imprisonment by a dying man, who hires Stryker to collect asteroids for their mineral content. Stryker soon finds he must stop a shadowy corporate group called The Board, who employ space…
I've been an avid reader of SF in general, and its sub-genre of time-travel, for most of my life, and have tackled this topic in my own writings as well. Time-travel tales often deal with inherent paradoxes, such as the Grandfather Paradox, which asks: If you go back in time and kill your grandfather, would you then never be born and therefore never commit the murder? If so, then your grandfather lives and you were born and . . . Such paradoxes boggle the mind and provide fascinating territory for SF authors to explore.
This contemporary SF novel deals with a lot of the nitty-gritty, nuts-and-bolts aspect of time travel, as well as providing an intriguing story. So many time-travel stories gloss over many of the implications of this technology, but The Chronocar doesn't shy away from such concepts. It also features believable, rough-around-the-edges characters and a truly surprising plot twist. Also, one of my favorite things about this novel is how reminiscent it is of Golden Age SF.
Imagine being born the son of a slave with the mind of a genius. That was Simmie Johnson in the years following the Civil War. After a perilous escape from lynch mobs in Mississippi, he manages to earn a PhD in physics at Tuskegee, and in his research discovers the secret of time travel. He develops a design for a time machine called a Chronocar, but the technology required to make it work does not yet exist.Fast forward 125 years. A young African American Illinois Tech student in Chicago finds Dr. Johnson’s plans and builds a Chronocar. He goes back…
