Hello everyone.

Could you please help me on this?

"The comet broke into several pieces because the same gravity and magnetism that causes Io to burp sulfur all over itself also ripped the comet apart. And then the gravity dragged those pieces into a crash course with the big planet. "

What does "crash course" mean in this context?

Thanks a lot.
It means that it's path (trajectory) will cause it to crash into the planet.
Thanks a lot.