Curious article. They discuss it as if it is a totally new concept, but this has been a cosmology topic for a long time. The balance (or lack thereof) between antimatter and matter was already part of science fiction stories in the 1950s. Mr. Spock even commented in a Star Trek episode about the mystery of the missing antimatter in the universe in the 1960s tv show. I attended astrophysics lectures that covered the issue in the early 1970s.
And Kirk has a “roommate”