is a Indian band doing fusion music.
Astronomers are starting to study photographs of stars, searching for distinc- tive gravitational effects caused by cosmic strings
These can be either cosmic strings
or "textures" (knotlike topological structures) if the defects formed in the very early universe, or almost any other proposed space-time defects if they formed after the background radiation broke free from matter.
18 SCIENCE, was in reasonable agreement with the predicted density of cosmic strings
calculated using Kibble's theory.
Gott noted that two straight, parallel, infinitely long cosmic strings
hurtling past each other in opposite directions could provide a suitable setting for time travel.
He argued that scientists could gain important insights into the behavior of cosmological defects known as cosmic strings
by studying a special kind of vortex defect formed when helium undergoes a phase transition from a normal liquid to a superfluid, which flows without friction.
Different field theories, depending on their complexity, predict different kinds of phase transitions that lead to different kinds of space-time defects: domain walls, cosmic strings
, monopoles, global textures.
It's a way of keeping speculation about dark matter from falling entirely into the hands of particle physicists, who have proposed an array of strange candidates, from weakly interacting massive particles to cosmic strings
(SN: 3/4/89, p.
Even physicists often need help in teasing out what such equations mean -- what predictions they make about the behavior of electrons, galaxies or cosmic strings
Gamma-ray bursters may lie outside our galaxy, and some theorists have suggested exotic explanations for them--for example, that they are vibrating cosmic strings
(SN: 5/30/87, p.
are defects in the structure of the universe,defects in space itself.
, which are topological defects in the structure of space, are the latest things to be suggested as triggers of galaxy formation.