The Mysterious Universe

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Astronomers initially thought this single beam of light was just an error (noise) and almost deleted it.
Such streaks are usually caused by cosmic rays hitting a camera sensor, but this one did not disappear.
It was an actual existing structure. This line, stretching straight out from a galaxy, was 200,000 light-years long—twice the width of the Milky Way.
And this line was made of stars. Just as a contrail behind an airplane is clearest right behind the plane, the stars became younger toward the end.
So, what lies at the very end? There is nothing visible to the naked eye.
Therefore, the James Webb Space Telescope was used to observe the end, and a shockwave similar to a sonic boom was discovered.
Something invisible was charging through the sparse gas there at a tremendous speed of about 1,000 km per second.
That is a speed fast enough to travel from the Earth to the Moon in just 7 minutes.
It was a black hole that had been ejected from its own galaxy.
How on earth could an object weighing as much as ten million suns be flung away?
When two galaxies collide, the black holes at their centers sink to the middle and form a pair.
Then, when a third galaxy merges, it brings another black hole along. When three gather, the balance is broken. Due to a gravitational slingshot effect, one of them is flung out forever.
Returning to the very end, the shockwave compressed the gas so intensely that the gas began to clump and ignite in its wake.
Black holes are usually known for swallowing stars.
But this black hole is creating them.