<a href="https://en.wikipedia.org/wiki/Black_hole" class="extiw" title="en:Black hole">Black hole</a> jet diagram.<br>
Original description: This artist's concept reveals the anatomy of a blazar. A blazar refers to a type of quasar, a bright galaxy with an active supermassive black hole at its core. Like quasars, blazars have particle jets, only the jets -- by chance alignment -- are pointed directly in Earth's direction. Blazars are strong gamma-ray emitters, where as quasars are strong emitters of X rays, visible light, and radio waves.
NASA
2003-12-16
<ul><li>Image: <a rel="nofollow" class="external free" href="http://www.nasa.gov/centers/goddard/images/content/96552main_jet_schematic.jpe">http://www.nasa.gov/centers/goddard/images/content/96552main_jet_schematic.jpe</a></li>
<li>Description: <a rel="nofollow" class="external free" href="https://www.nasa.gov/centers/goddard/news/topstory/2003/1212einstein.html">https://www.nasa.gov/centers/goddard/news/topstory/2003/1212einstein.html</a></li></ul>