system
Given the following post, respond as if you're commenting on Reddit:
human
Does the discovery of gravitational waves mean that eventually we will be able to detect and map dark matter as gravity is the only evidence of its existance?
gpt
First, we can already use the paths of light and motions of objects in space to map out dark matter.

But will gravitational waves let us do more?  From what we know of dark matter, it seems unlikely that this will help us, at least for some time.  To be detectable, we need gravitational waves produced from some cataclysmic event, and dark matter seems unlikely to be prone to such events.  But if it is, now we'll have a way to know -- and that's exciting!  And maybe there are effects we have not thought of involving dark matter to look for, but people will no doubt be giving this some thought.

Eventually, if we get to a point where we can measure the relic gravitational waves from just after the Big Bang, that may give us some insight into the behavior of dark matter.