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  2. Wormhole - Wikipedia

    en.wikipedia.org/wiki/Wormhole

    A wormhole is a hypothetical structure which connects disparate points in spacetime. It may be visualized as a tunnel with two ends at separate points in spacetime (i ...

  3. Non-orientable wormhole - Wikipedia

    en.wikipedia.org/wiki/Non-orientable_wormhole

    The existence of a traversable nonorientable wormhole would seem to allow the conversion of matter to antimatter, and vice versa. A universe that includes one of these "non-orientable" connections does not allow a global definition of whether a particle is "really" matter or antimatter, and this sort of universe, with no global definition of ...

  4. Astronomy - Wikipedia

    en.wikipedia.org/wiki/Astronomy

    Astronomy is a natural science ... crafting charts of the heavens as well as ... dark energy, and black holes; whether or not time travel is possible, wormholes ...

  5. Black hole cosmology - Wikipedia

    en.wikipedia.org/wiki/Black_hole_cosmology

    In the Einstein–Cartan–Sciama–Kibble theory of gravity, however, it forms a regular Einstein–Rosen bridge, or wormhole. Schwarzschild wormholes and Schwarzschild black holes are different mathematical solutions of general relativity and the Einstein–Cartan theory. Yet for observers, the exteriors of both solutions with the same mass ...

  6. Theoretical physics - Wikipedia

    en.wikipedia.org/wiki/Theoretical_physics

    Visual representation of a Schwarzschild wormhole. Wormholes have never been observed, but they are predicted to exist through mathematical models and scientific theory. Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena.

  7. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    This glossary of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is concerned with the study of celestial objects and phenomena that originate outside the atmosphere of Earth. The field of astronomy features an extensive vocabulary and a ...

  8. Wormhole (disambiguation) - Wikipedia

    en.wikipedia.org/wiki/Wormhole_(disambiguation)

    A wormhole is a hypothetical topological feature of spacetime. Wormhole may also refer to: Bajoran wormhole, a wormhole located near the planet Bajor in the fictional Star Trek universe; Wormholes: Essays and Occasional Writings, a book containing writings from four decades by the English author John Fowles

  9. Astronomical coordinate systems - Wikipedia

    en.wikipedia.org/wiki/Astronomical_coordinate...

    Coordinate systems in astronomy can specify an object's relative position in three-dimensional space or plot merely by its direction on a celestial sphere, if the object's distance is unknown or trivial. Spherical coordinates, projected on the celestial sphere, are analogous to the geographic coordinate system used on the surface of Earth.