The key ideas

The Edge of Space-Time

Chanda Prescod-Weinstein, 2026

A silver atom passes through a magnet and seems to forget an answer it already gave. Physicist Chanda Prescod-Weinstein leads us to the edges of the known: quantum particles, dark matter, and neutrinos. She explains them through poetry, jazz, and Star Trek. After this book, physics no longer feels like a private club for a select few.

Who it is for

For anyone who once decided physics was not for them. And for anyone who loves space, music, and poetry and wants to see them meet in one book.

The ancestors knew how to fly. I fly too, when I can escape into contemplating the universe through the lens of quantum fields.

The engineer who made a girl a physicist

Young Chanda Prescod-Weinstein watches Star Trek: The Next Generation on television. The starship’s chief engineer is Geordi La Forge, played by LeVar Burton. He is a Black man who understands the engines better than anyone aboard. Years later, she will name this character as one reason she became a physicist.

Today, Prescod-Weinstein is a cosmologist and professor at the University of New Hampshire. Her field is dark matter, the early universe, and neutron stars. Her first book concerned the wonder of the cosmos and injustice within science itself. Her second explores space-time and everything within it.

The book’s central idea hides in its title. The edge is where what we know ends: about the universe and ourselves. The author believes this is the best vantage point for seeing the bigger picture. She also believes physics is a way of looking at the universe that belongs to everyone rather than a select few.

Ahead are particles that seem to forget their own answers, invisible matter, and ancient thinkers contemplating the cosmos long before Newton. Alongside them come Langston Hughes’s poems, Lewis Carroll’s Alice, and Sun Ra’s music. There will be no formulas, and the author promises to flag important conclusions for readers who want simply to float with the current. You can settle in comfortably.

To understand a room, look at its walls

Imagine calculating how air moves in a room. A physicist has the equation but cannot solve it without knowing where the walls, floor, and ceiling are and whether a window is open. Physicists call this information about a problem’s edges boundary conditions. Without it, the equation remains an empty form.

Prescod-Weinstein draws attention to what popular books about space usually leave unspoken: the universe presents the same situation. Cosmological equations also need to know what happens at the edges. What happened at the very beginning? Where does what we can possibly observe end? The author leads readers to the farthest boundary, the particle horizon: the limit from which any signal could have reached us over the universe’s entire lifetime.

Then she makes a move distinguishing her from other popularizers. “Edge” is more than a mathematical word for her. In the Black feminist thought she draws on, the edge is the position of people on society’s margins. From there, they see what the center misses. Science is similar: the most interesting questions live at the boundary of the known rather than its middle.

For the author, therefore, the edge of knowledge is neither failure nor a place where “science doesn’t know.” It is the physicist’s workplace. You can approach your own questions this way too: begin with what you do not understand instead of hiding it.

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About the author

Chanda Prescod-Weinstein is an American cosmologist, particle physicist, and professor at the University of New Hampshire. Her first book, The Disordered Cosmos, won the 2021 Los Angeles Times Book Prize in Science and Technology.

All books by this author: Chanda Prescod-Weinstein

Terms from the book

  • Zhuangzi
  • Hughes
  • Rubin
  • Burton
  • Dark matter
  • Space-time
  • Carroll
  • Dark energy
  • La Forge: Geordi La Forge, chief engineer of the starship Enterprise in Star Trek: The Next Generation (1987–1994).
  • Cosmologist: A scientist who studies the universe as a whole: its origin, structure, and evolution.
  • Neutron stars: Extremely dense remnants of exploded massive stars. More than the Sun’s mass is compressed into a city-sized sphere.
  • Sun Ra: An American jazz composer and bandleader (1914–1993). He called himself a visitor from Saturn and made the film Space Is the Place.
  • Boundary conditions: Information about what happens at a problem’s edges: at walls, at the beginning, at infinity. A physical equation cannot be solved without it.
  • Particle horizon: The farthest distance from which light or another signal could have reached us during the universe’s existence.
  • Stern: Otto Stern (1888–1969), a German-American physicist awarded the 1943 Nobel Prize in Physics.
  • Gerlach: Walther Gerlach (1889–1979), a German experimental physicist who conducted the silver-atom experiment with Stern in 1922.
  • Spin: An intrinsic quantum property of a particle resembling a tiny magnet. Despite its name, it does not mean the particle rotates.
  • Jabberwocky: A poem from Lewis Carroll’s Through the Looking-Glass composed almost entirely of invented words.
  • Triplet: Three notes of equal duration played in the time normally given to two.
  • Trap: A hip-hop genre originating in the southern United States, with rapid, subdivided drum rhythms and heavy bass.
  • Axions: Hypothetical very light particles and one candidate for dark matter. They have not yet been detected.
  • Neutrinos: Very light particles with no electric charge that barely interact with matter. They come in three types and change from one to another.
  • Flavors: In physics, flavor names a type of particle. Neutrinos have three flavors: electron, muon, and tau.
  • Mozi: A Chinese philosopher of the fifth century BCE. His followers left texts on motion, optics, and geometry.
  • Bantu: A large language family in Central, East, and Southern Africa, including Swahili and Zulu.
  • Palikur: An Indigenous Amazonian people living near the border between Brazil and French Guiana.
  • Curvilinear coordinate system: A way to describe the positions of points along curved rather than straight lines, like meridians and parallels on a globe.
  • Bouchet: Edward Bouchet (1852–1918), the first African American to receive a physics doctorate, awarded by Yale University in 1876.
  • Yale University: One of the oldest US universities, in New Haven.
  • Uhura: Lieutenant Uhura, communications officer of the starship Enterprise in the original Star Trek (1966–1969).
  • Nichols: Nichelle Nichols (1932–2022), the American actress who played Lieutenant Uhura. She later helped NASA recruit women and minorities as astronauts.
  • Ebony: An American magazine about African American life, published since 1945.
  • Murrow: Edward Murrow (1908–1965), an American journalist who became head of the United States Information Agency in 1961.
  • Webb: James Webb (1906–1992), NASA administrator from 1961 to 1968. A space telescope bears his name.
  • Sankofa: A concept of the Akan people of West Africa meaning “go back and get it”: sometimes reaching the future requires returning to the past.
  • Akan: A group of peoples in Ghana and Côte d’Ivoire speaking related languages.

All terms

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