tovisonnenberg said:would a gravitational wave do the same?
Gravitational waves are ripples in the fabric of space-time that are caused by the acceleration of massive objects, such as black holes or neutron stars.
Gravitational waves are detected using highly sensitive instruments called interferometers, which measure tiny changes in the distance between two points caused by passing gravitational waves.
In a positively curved universe, gravitational waves travel at a slower speed compared to a flat universe. This is because the curvature of space-time affects the propagation of gravitational waves.
Detection of gravitational waves in a positively curved universe would provide evidence for the existence of a positive cosmological constant, which is a measure of the expansion rate of the universe. It would also support theories that suggest the universe is finite and closed.
While the detection of gravitational waves in a positively curved universe has important implications for our understanding of the universe, it is unlikely to have practical applications. Gravitational waves are extremely weak and difficult to detect, and their effects on matter are very small.