For the first time ionized hydrogen has been detected at the lowest frequency ever towards the center of our Galaxy. The findings originate from a cloud that is both very cold (around -230 degrees Celsius) and also ionized, something that has never been detected before. This discovery may help to explain why stars don’t form as quickly as they theoretically could.
Source:
https://phys.org/news/2019-07-star-formation-halted-cold-ionized.html