Sleeping supermassive black holes awakened br
<p style="text-align:start">Reporting in three different papers in&nbsp;<em>The Astrophysical Journal</em>, a Caltech-led team of researchers has concluded that an obscure class of galaxies known as Compact Symmetric Objects, or CSOs, are not young as previously thought but rather lead relatively short lives.</p>
Anthony Tony Readhead Vikram Ravi Luminosity Branch European Research Council National Science Foundation Compact Symmetric Objects
Source: eurekalert.org