A mysterious object from interstellar space is screaming through the solar system right now, and is expected to rip past several planets over the coming months. Astronomers have been fascinated by the unusual apparition, broadly coming to the conclusion that it's a comet, a possibly enormous wad of ice and dust particles. As it approaches its closest point to our Sun, its activity is steadily picking up, meaning that it's shedding more and more gases and dust, giving it a growing tail. But ac...
