Knowra2I/BorisovLinked fromLinked fromThe 3 pages that link to 2I/Borisov, each with the reason it gives.All 3Broader topic 3Hyperbolic trajectoryBroader topic: Its hyperbolic orbit revealed an extrasolar origin.Interstellar objectBroader topic: Its familiar comet-like activity contrasted with ʻOumuamua’s ambiguous appearance.1I/ʻOumuamuaBroader topic: Its comet-like appearance offered a revealing comparison with the less visibly active ʻOumuamua.