From the second paragraph of the article: "You have probably heard about the hunt for dark matter, a mysterious substance thought to permeate the universe, the

From the second paragraph of the article: "You have probably heard about the hunt for dark matter, a mysterious substance thought to permeate the universe, the effects of which we can see through its gravitational pull. But our models of the universe also say there should be about twice as much ordinary matter out there, compared with what we have observed so far." This could have been worded slightly differently to emphasize that the second sentence is contrasting with the first, but no; this is about regular matter, not Dark Matter.