Wormholes in spacetime and their use for interstellar travel: A tool for teaching general relativity
1988/05/01 by Michael S. Morris, Kip S. Thorne · 2,940 citations
Physics and Astronomy · #Classical mechanics #Cosmology and Gravitation Theories #Einstein #General relativity #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #Relativity and Gravitational Theory #Spacetime #Theoretical physics #Wormhole
paper · doi:10.1119/1.15620
published in American Journal of Physics 56(5), 395-412 (American Institute of Physics)
openalex publication_date 1988/05/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Abstract
Rapid interstellar travel by means of spacetime wormholes is described in a way that is useful for teaching elementary general relativity. The description touches base with Carl Sagan’s novel Contact, which, unlike most science fiction novels, treats such travel in a manner that accords with the best 1986 knowledge of the laws of physics. Many objections are given against the use of black holes or Schwarzschild wormholes for rapid interstellar travel. A new class of solutions of the Einstein field equations is presented, which describe wormholes that, in principle, could be traversed by human beings. It is essential in these solutions that the wormhole possess a throat at which there is no horizon; and this property, together with the Einstein field equations, places an extreme constraint on the material that generates the wormhole’s spacetime curvature: In the wormhole’s throat that material must possess a radial tension τ0 with the enormous magnitude τ0∼ (pressure at the center of the most massive of neutron stars)×(20 km)2/(circumference of throat)2. Moreover, this tension must exceed the material’s density of mass-energy, ρ0c2. No known material has this τ0>ρ0c2 property, and such material would violate all the ‘‘energy conditions’’ that underlie some deeply cherished theorems in general relativity. However, it is not possible today to rule out firmly the existence of such material; and quantum field theory gives tantalizing hints that such material might, in fact, be possible.
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- Uniqueness of higher-dimensional phantom field wormholes
- Generalized Ellis-Bronnikov wormhole solution in the scalar-Einstein-Gauss-Bonnet 4d gravitational model
- Higher-dimensional thin-shell wormholes in Einstein–Yang–Mills–Gauss–Bonnet gravity
- Two open universes connected by a wormhole: exact solutions
- Gravitational Lensing from a Spacetime Perspective. [europepmc]
- Quantum detection of wormholes. [europepmc]
- Palatini wormholes and energy conditions from the prism of general relativity. [europepmc]
- Are gravitational wave ringdown echoes always equal-interval? [europepmc]
- 100 years of mathematical cosmology: Models, theories and problems, Part B. [europepmc]
- Relativistic Bohmian trajectories of photons via weak measurements. [europepmc]
- Local expansion mechanisms for quantum-scale wormholes. [europepmc]
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