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How to Build a Time Machine
by Paul C.W. Davies • 2001
Forward time travel is real. Going back needs wormholes, exotic matter, and a loophole in causality.
3.82
1k+
How to Build a Time Machine Summary
How to Build a Time Machine 92%
Forward time travel is real. Going back needs wormholes, exotic matter, and a loophole in causality.
by Paul C.W. Davies 2001
3.82
1k+ ratings
The Universe in a Nutshell
by Stephen W. Hawking • 2001
How can a three-dimensional universe be a flat hologram? The physics that points toward an answer.
4.18
46k+
The Universe in a Nutshell Summary
The Universe in a Nutshell 91%
How can a three-dimensional universe be a flat hologram? The physics that points toward an answer.
by Stephen W. Hawking 2001
4.18
46k+ ratings
The Time Ships
by Stephen Baxter • 1995
A Victorian inventor discovers his time machine has splintered the future into warring worlds.
3.95
7k+
The Time Ships Summary
The Time Ships 91%
A Victorian inventor discovers his time machine has splintered the future into warring worlds.
by Stephen Baxter 1995
3.95
7k+ ratings
Time Travel in Einstein's Universe
by J. Richard Gott III • 2001
Einstein's two routes to time travel, and why no one from the future has shown up.
4.07
2k+
Time Travel in Einstein's Universe Summary
Time Travel in Einstein's Universe 91%
Einstein's two routes to time travel, and why no one from the future has shown up.
by J. Richard Gott III 2001
4.07
2k+ ratings
The Traveler
by Joseph Eckert • 2026
A single lost day becomes a skipped century, then the end of time, for one ordinary father.
4.09
729
The Traveler Summary
The Traveler 90%
A single lost day becomes a skipped century, then the end of time, for one ordinary father.
by Joseph Eckert 2026
4.09
729 ratings
Endless Universe
by Paul J. Steinhardt • 2007
The Big Bang was not the beginning. A trillion-year cycle of collisions remakes the universe.
4.12
1k+
Endless Universe Summary
Endless Universe 90%
The Big Bang was not the beginning. A trillion-year cycle of collisions remakes the universe.
by Paul J. Steinhardt 2007
4.12
1k+ ratings
About Time
by Adam Frank • 2011
Time is a human invention, rebuilt every era. Our cosmology just catches up.
3.88
484
About Time Summary
About Time 90%
Time is a human invention, rebuilt every era. Our cosmology just catches up.
by Adam Frank 2011
3.88
484 ratings
A Universe from Nothing
by Lawrence M. Krauss • 2012
No creator required. Physics now shows how a universe can emerge from nothing.
3.94
31k+
A Universe from Nothing Summary
A Universe from Nothing 89%
No creator required. Physics now shows how a universe can emerge from nothing.
by Lawrence M. Krauss 2012
3.94
31k+ ratings
The Philosopher's Stone
by Colin Wilson • 1969
A scientist's brain operation unlocks hidden powers and reveals ancient gods once ruled the world.
3.92
748
The Philosopher's Stone Summary
The Philosopher's Stone 89%
A scientist's brain operation unlocks hidden powers and reveals ancient gods once ruled the world.
by Colin Wilson 1969
3.92
748 ratings
The Fabric of the Cosmos
by Brian Greene • 2004
Space stretches, time is relative, and your present moment is an illusion.
4.13
41k+
The Fabric of the Cosmos Summary
The Fabric of the Cosmos 89%
Space stretches, time is relative, and your present moment is an illusion.
by Brian Greene 2004
4.13
41k+ ratings
In Search of Time
by Dan Falk • 2008
Ancient calendars and modern physics agree: time is not the steady river we imagine.
3.97
548
In Search of Time Summary
In Search of Time 89%
Ancient calendars and modern physics agree: time is not the steady river we imagine.
by Dan Falk 2008
3.97
548 ratings
Hyperion
by Dan Simmons • 1989
Seven pilgrims journey to a closed world, each carrying a wish only its monster can grant.
4.28
305k+
Hyperion Summary
Hyperion 89%
Seven pilgrims journey to a closed world, each carrying a wish only its monster can grant.
by Dan Simmons 1989
4.28
305k+ ratings
The Accidental Time Machine
by Joe Haldeman • 2007
A failed physicist's broken calibrator is a one-way time machine, each jump exponentially longer.
3.73
11k+
The Accidental Time Machine Summary
The Accidental Time Machine 89%
A failed physicist's broken calibrator is a one-way time machine, each jump exponentially longer.
by Joe Haldeman 2007
3.73
11k+ ratings
Coming of Age in the Milky Way
by Timothy Ferris • 2003
Our cosmic address was once a tiny sphere with Earth at its center. How we found the real one.
4.16
3k+
Coming of Age in the Milky Way Summary
Coming of Age in the Milky Way 89%
Our cosmic address was once a tiny sphere with Earth at its center. How we found the real one.
by Timothy Ferris 2003
4.16
3k+ ratings
Just Six Numbers
by Martin J. Rees • 1999
The difference between a living universe and a dead one is six numbers.
3.96
5k+
Just Six Numbers Summary
Just Six Numbers 89%
The difference between a living universe and a dead one is six numbers.
by Martin J. Rees 1999
3.96
5k+ ratings
Pebble in the Sky
by Isaac Asimov • 1950
A 1949 tailor hurled into the far future gains telepathy and must stop a galactic genocide.
3.90
28k+
Pebble in the Sky Summary
Pebble in the Sky 89%
A 1949 tailor hurled into the far future gains telepathy and must stop a galactic genocide.
by Isaac Asimov 1950
3.90
28k+ ratings
The First Three Minutes
by Steven Weinberg • 1977
Three minutes after the Big Bang, the universe fixed its elemental recipe forever.
4.10
13k+
The First Three Minutes Summary
The First Three Minutes 89%
Three minutes after the Big Bang, the universe fixed its elemental recipe forever.
by Steven Weinberg 1977
4.10
13k+ ratings
The Rise and Fall of D.O.D.O.
by Neal Stephenson • 2017
Magic died with the first photograph. A secret agency found a quantum loophole to restore it.
3.86
35k+
The Rise and Fall of D.O.D.O. Summary
The Rise and Fall of D.O.D.O. 89%
Magic died with the first photograph. A secret agency found a quantum loophole to restore it.
by Neal Stephenson 2017
3.86
35k+ ratings
The Number of the Beast
by Robert A. Heinlein • 1980
Two couples flee assassins in a flying car that jumps to every universe ever imagined.
3.63
13k+
The Number of the Beast Summary
The Number of the Beast 89%
Two couples flee assassins in a flying car that jumps to every universe ever imagined.
by Robert A. Heinlein 1980
3.63
13k+ ratings
Exhalation
by Ted Chiang • 2019
A merchant in ancient Baghdad steps through a time portal to undo a sorrow twenty years past.
4.27
113k+
Exhalation Summary
Exhalation 89%
A merchant in ancient Baghdad steps through a time portal to undo a sorrow twenty years past.
by Ted Chiang 2019
4.27
113k+ ratings
The Urth of the New Sun
by Gene Wolfe • 1987
A torturer-turned-king sails a starship beyond the universe to be judged by the makers of suns.
4.06
9k+
The Urth of the New Sun Summary
The Urth of the New Sun 89%
A torturer-turned-king sails a starship beyond the universe to be judged by the makers of suns.
by Gene Wolfe 1987
4.06
9k+ ratings
On the Origin of Time
by Thomas Hertog • 2023
The universe has no single origin story. Hawking's last theory: our questions shape the cosmic past.
4.06
3k+
On the Origin of Time Summary
On the Origin of Time 89%
The universe has no single origin story. Hawking's last theory: our questions shape the cosmic past.
by Thomas Hertog 2023
4.06
3k+ ratings
The End of Everything
by Katie Mack • 2020
Five ways the universe ends, from a cold fade to a quantum bubble that deletes reality.
4.25
13k+
The End of Everything Summary
The End of Everything 89%
Five ways the universe ends, from a cold fade to a quantum bubble that deletes reality.
by Katie Mack 2020
4.25
13k+ ratings
The Theory of Everything
by Stephen W. Hawking • 2002
If a universe can arise from nothing, what role remains for a creator?
4.18
29k+
The Theory of Everything Summary
The Theory of Everything 89%
If a universe can arise from nothing, what role remains for a creator?
by Stephen W. Hawking 2002
4.18
29k+ ratings
The Gone World
by Tom Sweterlitsch • 2018
A murdered family. A missing child. An agent who visits futures where humanity is always dead.
3.91
30k+
The Gone World Summary
The Gone World 89%
A murdered family. A missing child. An agent who visits futures where humanity is always dead.
by Tom Sweterlitsch 2018
3.91
30k+ ratings
The Last Watch
by J.S. Dewes • 2021
Exiled to guard the universe's edge, a prince and a commander discover the boundary is collapsing.
3.97
12k+
The Last Watch Summary
The Last Watch 89%
Exiled to guard the universe's edge, a prince and a commander discover the boundary is collapsing.
by J.S. Dewes 2021
3.97
12k+ ratings
The Elephant in the Universe
by Govert Schilling • 2022
Eighty-four percent of matter is invisible. A century-long hunt has yet to catch it.
4.07
265
The Elephant in the Universe Summary
The Elephant in the Universe 89%
Eighty-four percent of matter is invisible. A century-long hunt has yet to catch it.
by Govert Schilling 2022
4.07
265 ratings
The Dancing Universe
by Marcelo Gleiser • 1997
Creation myths were not wrong turns. They were the first cosmology, and physics is their heir.
4.22
550
The Dancing Universe Summary
The Dancing Universe 89%
Creation myths were not wrong turns. They were the first cosmology, and physics is their heir.
by Marcelo Gleiser 1997
4.22
550 ratings
Other Worlds
by Paul C.W. Davies • 1980
Observation brings reality into being; our habitable universe may be a fluke among dead worlds.
3.86
188
Other Worlds Summary
Other Worlds 89%
Observation brings reality into being; our habitable universe may be a fluke among dead worlds.
by Paul C.W. Davies 1980
3.86
188 ratings
Human Universe
by Brian Cox • 2014
The galaxy should teem with life. The silence hints we might be alone in asking why.
4.28
5k+
Human Universe Summary
Human Universe 89%
The galaxy should teem with life. The silence hints we might be alone in asking why.
by Brian Cox 2014
4.28
5k+ ratings
A Brief Welcome to the Universe
by Neil deGrasse Tyson • 2021
A quick spin through the cosmos: what stars cook, why galaxies flee, how long we last.
4.03
622
A Brief Welcome to the Universe Summary
A Brief Welcome to the Universe 89%
A quick spin through the cosmos: what stars cook, why galaxies flee, how long we last.
by Neil deGrasse Tyson 2021
4.03
622 ratings
Shards of a Shattered Mirror Book I
by Darryl Anka • 2017
She glimpses every future in shattered light, but an alien empire has already chosen one.
4.53
150
Shards of a Shattered Mirror Book I Summary
Shards of a Shattered Mirror Book I 89%
She glimpses every future in shattered light, but an alien empire has already chosen one.
by Darryl Anka 2017
4.53
150 ratings
To Infinity and Beyond
by Neil deGrasse Tyson • 2023
A cosmic tour where emptiness isn't empty, time bends, and most of reality remains invisible.
4.31
2k+
To Infinity and Beyond Summary
To Infinity and Beyond 89%
A cosmic tour where emptiness isn't empty, time bends, and most of reality remains invisible.
by Neil deGrasse Tyson 2023
4.31
2k+ ratings
Cycles of Time
by Roger Penrose • 2010
Before our Big Bang, another universe died. Its gravitational echoes may still be visible overhead.
3.93
3k+
Cycles of Time Summary
Cycles of Time 89%
Before our Big Bang, another universe died. Its gravitational echoes may still be visible overhead.
by Roger Penrose 2010
3.93
3k+ ratings
Eyes of the Void
by Adrian Tchaikovsky • 2022
The Architects return. A haunted navigator must uncover their secret while every faction hunts him.
4.19
21k+
Eyes of the Void Summary
Eyes of the Void 89%
The Architects return. A haunted navigator must uncover their secret while every faction hunts him.
by Adrian Tchaikovsky 2022
4.19
21k+ ratings
A Wrinkle in Time
by Madeleine L'Engle • 1962
A girl folds space with her brother to save their father from a planet of crushing sameness.
3.97
1.3M+
A Wrinkle in Time Summary
A Wrinkle in Time 89%
A girl folds space with her brother to save their father from a planet of crushing sameness.
by Madeleine L'Engle 1962
3.97
1.3M+ ratings
The Science of Interstellar
by Kip S. Thorne • 2015
Black holes bend time. Wormholes need exotic matter. Interstellar's physicist explains.
4.30
7k+
The Science of Interstellar Summary
The Science of Interstellar 89%
Black holes bend time. Wormholes need exotic matter. Interstellar's physicist explains.
by Kip S. Thorne 2015
4.30
7k+ ratings
Einstein's Unfinished Symphony
by Marcia Bartusiak • 2000
Einstein predicted space-time ripples. The ear to hear them: four kilometers of laser.
4.04
203
Einstein's Unfinished Symphony Summary
Einstein's Unfinished Symphony 88%
Einstein predicted space-time ripples. The ear to hear them: four kilometers of laser.
by Marcia Bartusiak 2000
4.04
203 ratings
The Order of Time
by Carlo Rovelli • 2017
Time bends with gravity. No cosmos-wide now exists. The arrow of time is only entropy, rising.
4.13
39k+
The Order of Time Summary
The Order of Time 88%
Time bends with gravity. No cosmos-wide now exists. The arrow of time is only entropy, rising.
by Carlo Rovelli 2017
4.13
39k+ ratings
The Last Three Minutes
by Paul C.W. Davies • 1995
The universe will die: here are the hows, and loopholes that might let intelligence outlast it.
3.80
1k+
The Last Three Minutes Summary
The Last Three Minutes 88%
The universe will die: here are the hows, and loopholes that might let intelligence outlast it.
by Paul C.W. Davies 1995
3.80
1k+ ratings
Chronicles From The Future
by Achilleas Sirigos • 1972
From a coma in 1921, a teacher awakens inside a man of the year 3906.
3.78
569
Chronicles From The Future Summary
Chronicles From The Future 88%
From a coma in 1921, a teacher awakens inside a man of the year 3906.
by Achilleas Sirigos 1972
3.78
569 ratings
The Biggest Ideas in the Universe
by Sean Carroll • 2022
How equations reveal curved spacetime and time's arrow, no physics degree required.
4.00
2k+
The Biggest Ideas in the Universe Summary
The Biggest Ideas in the Universe 88%
How equations reveal curved spacetime and time's arrow, no physics degree required.
by Sean Carroll 2022
4.00
2k+ ratings
The Clock Mirage
by Joseph Mazur • 2020
Physics says time is relative. Biology says it's a cellular rhythm. The clock is a mirage.
3.42
118
The Clock Mirage Summary
The Clock Mirage 88%
Physics says time is relative. Biology says it's a cellular rhythm. The clock is a mirage.
by Joseph Mazur 2020
3.42
118 ratings
Astrophysics for People in a Hurry
by Neil deGrasse Tyson • 2017
From cosmic speck to the atoms in your bones: a quick tour of the universe.
4.08
210k+
Astrophysics for People in a Hurry Summary
Astrophysics for People in a Hurry 88%
From cosmic speck to the atoms in your bones: a quick tour of the universe.
by Neil deGrasse Tyson 2017
4.08
210k+ ratings
In Search of the Multiverse
by John Gribbin • 2009
Our universe seems fine-tuned for life. The real explanation: it is just one of countless tries.
4.08
1k+
In Search of the Multiverse Summary
In Search of the Multiverse 88%
Our universe seems fine-tuned for life. The real explanation: it is just one of countless tries.
by John Gribbin 2009
4.08
1k+ ratings
Across the Haunted Stars
by Abe Moss • 2022
Her father dragged her through a cosmic void. His machine needs her power to unmake reality.
4.46
251
Across the Haunted Stars Summary
Across the Haunted Stars 88%
Her father dragged her through a cosmic void. His machine needs her power to unmake reality.
by Abe Moss 2022
4.46
251 ratings
The Time Machine
by H.G. Wells • 1895
A Victorian inventor lands in a future paradise, unaware of what hunts its people after dark.
3.89
570k+
The Time Machine Summary
The Time Machine 88%
A Victorian inventor lands in a future paradise, unaware of what hunts its people after dark.
by H.G. Wells 1895
3.89
570k+ ratings
The Infinite and the Divine
by Robert Rath • 2020
Two deathless rivals feud ten thousand years for a puzzle box mapping a god's tomb.
4.44
7k+
The Infinite and the Divine Summary
The Infinite and the Divine 88%
Two deathless rivals feud ten thousand years for a puzzle box mapping a god's tomb.
by Robert Rath 2020
4.44
7k+ ratings
Interstellar
by Avi Loeb • 2023
An object from another star defied physics. We weren't ready. A plan to catch the next one.
3.52
626
Interstellar Summary
Interstellar 88%
An object from another star defied physics. We weren't ready. A plan to catch the next one.
by Avi Loeb 2023
3.52
626 ratings
Aurora's End
by Amie Kaufman • 2021
Scattered across time, a squad outruns a collapsing loop to stop an enemy devouring the galaxy.
4.20
26k+
Aurora's End Summary
Aurora's End 88%
Scattered across time, a squad outruns a collapsing loop to stop an enemy devouring the galaxy.
by Amie Kaufman 2021
4.20
26k+ ratings
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