86 books like The Mindtraveler

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’m a writer and musician with a background in mathematics, which is what originally led to my intrigue in cosmology. For writing speculative fiction, I’ve dug into a range of topics from quantum mechanics to cognitive theory, but spacetime had the opposite causality: my interest later spawned my writing. When I first learned about special relativity, many aspects seemed counterintuitive but were mathematically sound, leading me to obsessively read books, watch videos, and perform hours of calculations to get a feel for it. And what draws my adoration most to the cosmos is the quality it shares with dinosaurs—the more I learn, the more majestic it becomes.

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.

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. 

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. 

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. 

I am a philosopher of science who has an obsession with time. People think this interest is a case of patronymic destiny, that it’s due to my last name being Callender. But the origins of “Callender” have nothing to do with time. Instead, I’m fascinated by time because it is one of the last fundamental mysteries, right up there with consciousness. Like consciousness, time is connected to our place in the universe (our sense of freedom, identity, meaning). Yet we don’t really understand it because there remains a gulf between our experience of time and the science of time. Saint Augustine really put his finger on the problem in the fifth century when he pointed out that it is both the most familiar and unfamiliar thing.

Like many others, and perhaps mostly the dreamers, I’ve had a lifelong fascination with time travel, along as many others, always wondering, what if? Plus, I have a passion for American history, mostly American Revolution history, always thinking, what if you could time travel back in time to witness history in the making, or travel to the future and witness the results of decisions made today. Plus, I have an obsession with a good mystery, mainly murder mysteries. I thoroughly enjoy a good murder mystery that has (I didn’t see that coming) twists, turns, and a few good red herrings. Which you can see by the books on my list. 

I have read SF, starting with the classic Jules Verne, since I was a young teenager. Soon I discovered Bradbury, Asimov, Clarke, Ellison, Zelazny, Dick, all of whom lit up my mind with wondrous and sometimes dangerous visions of possible futures. During the COVID shutdown period, when our university went to online instruction, my wife convinced me to try my hand at writing in my favorite genre. Previously I had written a textbook, How Films Tell Stories (listed here at Shepherd), but never any fiction, so I wrote Temporal Gambit, a time-travel adventure combined with themes of first contact, artificial intelligence, and alternate history. I then followed it with a sequel. I hope you enjoy. 

I'm a long-time role-player/gamemaster and reader of SFF, and I've read, created, and played (and written!) a lot of stories. Good stories come from good characters. We all know that. But part of what makes characters good is that they're believable, and to me their believability is inextricable from the worlds they come from. A world-build—setting, weather, technology, magic, science, cultures, and languages—should BE as much of a character as the protagonist(s). While I admit a fond nostalgia for ye olde semi-Euro-medieval setting, I love a world-build that challenges or surprises me, and I love the characters and stories that come out of those worlds. I hope you do too.