Are black holes time machines? Yes, but there’s a catch

Astronomers at Western Sydney University have discovered one of the biggest black hole jets in the sky.

Spanning more than a million light years from end to end, the jet shoots away from a black hole with enormous energy, and at almost the speed of light. But in the vast expanses of space between galaxies, it doesn’t always get its own way.

Jurik Peter/Shutterstock

Taking a closer look

At a mere 93 million light-years away, the galaxy NGC2663 is in our neighbourhood, cosmically speaking. If our galaxy were a house, NGC2663 would be a suburb or two away.

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