Picture a scar roughly 700 light-years long, carved into the X-ray sky by something nobody can identify. NASA's Chandra X-ray Observatory has found a mark where a giant black hole's powerful jet struck an unidentified object in its path. It's a black hole jet, moving at close to light speed, crashing into the unknown.

Centaurus A is the galaxy that is 12 million light-years away from Earth. It has been fascinating to scientists for a long time due to the existence of........

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