https://www.vice.com/en_us/article/dyvqwx/something-unexplained-is-sending-radio-signals-from-our-galaxys-center

Something near the center of our galaxy, the Milky Way, is spewing out bizarre radio signals that have flummoxed scientists, reports a new study. 

The unidentified radio source flashes for weeks at a time only to suddenly go dark—a pattern that does not line up any known space objects. The discovery is just the latest oddity that has been revealed by increasingly sensitive radio telescopes, which have exposed intricacies about enigmatic fast radio bursts and identified enormous formations called Odd Radio Circles.