Wow. Spoiler, quasars are galaxies colliding and part of the gases reacting with black holes in the middle of the galaxies. Does that mean we’re all doomed though we could galaxy hop in the distant future I suppose. And the rest of the dispersed gases will take millions or was it billions of years to make new stars again. Kinda reminds me of human life. We are born only to return to the Earth.
Scientists have unlocked one of the biggest mysteries of quasars—the brightest, most powerful objects in the universe—by discovering that they are ignited by galaxies colliding.
First discovered 60 years ago, quasars can shine as brightly as a trillion stars packed into a volume the size of our solar system. In the decades since they were first observed, what could trigger such powerful activity has remained a mystery. New work led by scientists at the Universities of Sheffield and Hertfordshire has now revealed that it is a consequence of galaxies crashing together.
The work is published in Monthly Notices of the Royal Astronomical Society.
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