Hawking, Stephen — A Brief History of Time

40 published claims from this book.

• Atoms would not exist in more than three dimensions.
• Black holes can form if stars collapse under gravity.
• Classical laws previously ruled out any time travel possibility.
• Einstein prioritized equations over political roles.
• Einstein’s pacifism changed due to the Nazi threat.
• Einstein’s political actions often led to unpopularity among peers.
• Energy density can be negative according to quantum theory.
• Extra dimensions allow shortcuts through space-time.
• Galileo pioneered the scientific method through observation and reason.
• Galileo’s observations challenged the Earth-centered universe model.
• Gravity changes how bodies move within time and space.
• Gravity results from curved space-time, not a traditional force.
• Higher energy particles may form black holes.
• Kepler’s elliptical orbits complicated traditional planetary motion theories.
• Newton manipulated events to ruin Flamsteed’s reputation.
• Newton’s friends protected him against Leibniz’s claims.
• Newton’s pursuit against counterfeiting involved severe consequences.
• Objects cannot reach the speed of light due to mass increase.
• Observations support the no boundary proposal for the universe.
• Quantum mechanics challenges previous understanding of the universe’s origins.
• Quantum mechanics predicts particles pass through both slits simultaneously.
• Quantum mechanics suggests particles lack defined positions and velocities.
• Quantum uncertainty drives the early universe’s non-uniformity.
• Supermassive black holes exist at the centers of galaxies.
• The area of a black hole’s event horizon indicates its entropy.
• The asymmetry in matter production confirms grand unified theories.
• The chronology protection conjecture might prevent time travel effects.
• The Church prioritized its authority over scientific inquiry.
• The event horizon’s area never decreases over time.
• The existence of the universe raises questions about its origin.
• The no boundary condition implies disorder increases even when contracting.
• The Pope feared Copernicanism would undermine the Church’s authority.
• The universe began with a big bang singularity due to general relativity.
• The universe might be completely self-contained and eternal.
• The universe requires expansion for intelligent life to exist.
• The universe’s laws can be discovered and understood.
• Theories must make testable predictions to be validated.
• Time travel implies a predetermined history without free will.
• Unification theories predict all forces act as one at high energies.
• Unified physics theories may require multiple formulations.