June 10, 2001 - The Chandra image of the quasar GB1508+5714 reveals a jet of high-energy particles that extends more than 100,000 light years from the supermassive black hole powering the quasar.
At a distance of 12 billion light years from Earth, this is the most distant jet ever detected. (Chandra/Harvard and NASA/CXC/A)
The discovery of this jet is especially significant because it provides astronomers with a way to measure the intensity of the cosmic background radiation about one billion years after the Big Bang.
Because it's the most distant jet ever detected. Being able to measure the universe shortly after it was created is kinda erie.