![radio signals waves and light rays, radar, wifi, antenna and satellite signal symbols handdrawn doodle style vector 6787485 Vector Art at Vecteezy radio signals waves and light rays, radar, wifi, antenna and satellite signal symbols handdrawn doodle style vector 6787485 Vector Art at Vecteezy](https://static.vecteezy.com/system/resources/previews/006/787/485/original/radio-signals-waves-and-light-rays-radar-wifi-antenna-and-satellite-signal-symbols-handdrawn-doodle-style-vector.jpg)
radio signals waves and light rays, radar, wifi, antenna and satellite signal symbols handdrawn doodle style vector 6787485 Vector Art at Vecteezy
![A mysterious interstellar radio signal has been blinking on and off every 22 minutes for over 30 years A mysterious interstellar radio signal has been blinking on and off every 22 minutes for over 30 years](https://images.theconversation.com/files/535259/original/file-20230703-257103-z65saa.png?ixlib=rb-1.1.0&rect=0%2C0%2C2880%2C1621&q=20&auto=format&w=320&fit=clip&dpr=2&usm=12&cs=strip)
A mysterious interstellar radio signal has been blinking on and off every 22 minutes for over 30 years
![8 billion-year-old radio signal found by astronomers -- and experts know 'precisely' where it came from 8 billion-year-old radio signal found by astronomers -- and experts know 'precisely' where it came from](https://nypost.com/wp-content/uploads/sites/2/2023/10/NYPICHPDPICT000062207662.jpg)
8 billion-year-old radio signal found by astronomers -- and experts know 'precisely' where it came from
![Astronomers spot record-breaking radio signal that took 8 billion years to reach Earth: "Mind-blowing" - CBS News Astronomers spot record-breaking radio signal that took 8 billion years to reach Earth: "Mind-blowing" - CBS News](https://assets2.cbsnewsstatic.com/hub/i/r/2020/06/09/b76e853e-53dd-4d54-b864-b7f0a3a4cadd/thumbnail/640x370/df6d72635bf38d4b90bcb546e55bd598/1920-v2-final-r1periodicity-name.jpg?v=1aa56f6681ae17ea762db96c4c7bc003)