Dark Matter might be the Glia cells of the universe: we don't look at it, but there much more going on than we could imagine
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
Dark Matter might be the Glia cells of the universe: we don't look at it, but there much more going on than we could imagine