World-first images show what the universe would look like if humans could see radio waves - ABC News
Galaxy - Radio, X-Ray, Extragalactic | Britannica
Extragalactic Radio Astronomy: Galaxy Classification, Active Galactic Nuclei, Superluminal Motion, Galaxy Clusters, and the Cosmic Microwave Background | SpringerLink
EHT pinpoints dark heart of the nearest radio | EurekAlert!
Radio telescope | Images, Definition, & Facts | Britannica
The brightest extragalactic radio sources (all sky map)
Galactic and Extra-Galactic Radio Astronomy – Attic Books
Galactic and Extra-Galactic Radio Astronomy: Gerrit L. Verschuur & Kenneth I. Kellermann, editors: 9780387065045: Amazon.com: Books
News from SKA pathfinder telescopes - Issuu
Galactic & Extragalactic Astronomy - Lowell Observatory
Extragalactic astronomy - Wikipedia
Have We Found the Closest Extragalactic Fast Radio Burst? | astrobites
Galaxy - Extragalactic, Nebulae, Stars | Britannica
Galactic and Extra-Galactic Radio Astronomy: Verschuur, G.L., Kellermann, K.I., Brunt, V. van: 9783642961809: Amazon.com: Books
New Image Reveals Possible Origins of “Odd Radio Circles” - Sky & Telescope - Sky & Telescope
EHT pinpoints dark heart of the nearest radio galaxy - MIT Haystack Observatory
EHT pinpoints dark heart of the nearest radio galaxy | EHT-Japan
Galactic and Extragalactic Radio Astronomy (Astronomy and Astrophysics Library): Verschuur, Gerrit L., Kellermann, Kenneth I., Bouton, E.: 9780387977355: Amazon.com: Books
Galactic and Extra-Galactic Radio Astronomy: Gerrit L. Verschuur & Kenneth I. Kellermann, editors: 9780387065045: Amazon.com: Books
We just found a source for one of the most mysterious phenomena in astronomy | MIT Technology Review
Galactic and Extragalactic Radio Astronomy (Astronomy and astrophysics Library): Verschuur, Gerrit L., Kellermann, Kenneth I.: 9783540965756: Amazon.com: Books
Radio galaxy - Wikipedia
Image Release: A Radio-Optical View of the Galaxy Hercules A - National Radio Astronomy Observatory
Galactic and Extragalactic Radio Astronomy - Gerrit L. Verschuur, Kenneth I. Kellermann - Google Books
