This story is nice. Super interesting. But you need to correct a major mistake.
This is not correct: "Comet Borisov is only the second interstellar minor body to enter our solar system..." It is the second *observed* interstellar body. It's predicted that these pass through frequently. In the history of our solar system, millions or perhaps billions have passed through. As our ability has improved to observe, we've already seen two in just a couple years. This happens all the time! Super cool that we are finally observing and studying them, but it is *not* only the second one to happen. (Or, when a tree falls in a forest, and no one is there to observe it... it's still fallen. When a comet or other body swings through the solar system from afar and no one observes it (or before humans even evolved to bear witness), it was still happening.)
Thanks for the interesting story. Sorry to nitpick, but that really is a major error of fact that should be corrected. Easy mistake to make (a lot of reporting now and a couple years ago did the same), but also important to do better.