Consequence of curvature of spacetime

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Discussion Overview

The discussion revolves around the consequences of spacetime curvature caused by an entire galaxy. Participants explore various effects related to this curvature, including gravitational phenomena and the dynamics of galaxies.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Some participants propose that gravitational lensing is a consequence of the curvature of spacetime caused by a galaxy.
  • Others argue that galaxies can move toward each other if the gravitational effects of curvature overcome the influence of dark energy.
  • A later reply mentions that the curvature of spacetime helps keep the galaxy gravitationally bound, allowing its stars to remain in orbit around the center.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the consequences of spacetime curvature, with no consensus reached on a singular effect.

Contextual Notes

Some claims depend on the definitions of gravitational effects and dark energy, and the discussion does not resolve the implications of these concepts.

SD das
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I was wondering that consequence of curvature of spacetime caused by an entire galaxy! Can anyone suggest?
 
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SD das said:
I was wondering that consequence of curvature of spacetime caused by an entire galaxy! Can anyone suggest?
Well, as Arman pointed out, gravitational lensing is one consquence. Another is that galaxies move toward each other if they are close enough for the curvature (aka gravity) to overcome dark energy.
 
SD das said:
I was wondering that consequence of curvature of spacetime caused by an entire galaxy

Galaxies do curve spacetime, just like any massive object or collection of objects. The main effect of that is to keep the galaxy itself gravitationally bound--its stars remain in orbit around its center instead of drifting off into intergalactic space.
 

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