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Doubts withabout the formation of the bullet cluster

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The bullet clusterbullet cluster is formed by the collision of two clusters of galaxies. After the collision, the stars and galaxies in those two clusters passed through each other. But the intergalactic gas clouds got slowed down during the collision and got stuck in between. Why didn't the stars and galaxies suffer collision? Is it that the probability that two galaxies will collide head-on is very small?

The bullet cluster is formed by the collision of two clusters of galaxies. After the collision, the stars and galaxies in those two clusters passed through each other. But the intergalactic gas clouds got slowed down during the collision and got stuck in between. Why didn't the stars and galaxies suffer collision? Is it that the probability that two galaxies will collide head-on is very small?

The bullet cluster is formed by the collision of two clusters of galaxies. After the collision, the stars and galaxies in those two clusters passed through each other. But the intergalactic gas clouds got slowed down during the collision and got stuck in between. Why didn't the stars and galaxies suffer collision? Is it that the probability that two galaxies will collide head-on is very small?

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Doubts with the formation of bullet cluster

The bullet cluster is formed by the collision of two clusters of galaxies. After the collision, the stars and galaxies in those two clusters passed through each other. But the intergalactic gas clouds got slowed down during the collision and got stuck in between. Why didn't the stars and galaxies suffer collision? Is it that the probability that two galaxies will collide head-on is very small?