Time Travel's Greatest Paradoxes: A Simple Guide to the Most Mind-Bending Puzzles in Physics

Nicole Sellers is a science writer and educator based in Boulder, Colorado, with over a decade of experience translating complex physics concepts for general audiences. She holds a Master's degree in Physics from the University of Colorado and a Bachelor's degree in Philosophy of Science from Reed College. Her academic background at the intersection of physics and philosophy gives her writing a distinctive perspective that bridges rigorous scientific analysis with deep conceptual questions.

Sellers began her career as a research assistant in the CU Boulder Department of Astrophysical and Planetary Sciences, where she worked on simulations of gravitational lensing. A talent for explaining her work to non-specialists led her to teaching, and she spent six years as a lecturer in the University of Colorado's Science Writing Program. During that time, she developed a curriculum on the physics of time travel that became one of the most popular elective courses in the program. Her teaching approach—built around paradoxes as entry points into difficult concepts—forms the foundation of this book.

Her writing has appeared in _Quanta Magazine_, _Nautilus_, _Physics Today_, and _Scientific American_, where her feature articles on time, causality, and the foundations of quantum mechanics have earned a loyal readership. She is the author of the popular science blog _Unruly Universe_, which explores the weirder corners of cosmology and particle physics with a focus on conceptual clarity and intellectual honesty. Her work has been cited by the American Association of Physics Teachers and used as supplementary material in university physics courses across the United States.

Sellers is a frequent guest on science podcasts and has appeared on _The Skeptics' Guide to the Universe_, _BBC Inside Science_, and _StarTalk Radio_, where she has discussed everything from wormhole stability to the philosophical implications of closed timelike curves. Her public lectures at the Denver Museum of Nature and Science and the World Science Festival have drawn standing-room-only crowds.

_Time Travel's Greatest Paradoxes_ is her first book. She is currently at work on her second, _Why Anything Exists: The Physics of Nothing and Something_, which explores the vacuum state, quantum field theory, and the origins of the universe. She lives in Boulder with her partner, two cats, and a telescope that sees far too much light pollution. She can be reached through her website at nicolasellers.com.