So that's all nice. But why now? That's the question everyone asks. We went decades — centuries, millennia really — without seeing a single rock that didn't have a "Made in the Solar System" sticker on it. Then, in the span of less than ten years, we get the…
This is Part 4 of a series on interstellar comets. Read Parts 1, 2, and 3.
So that's all nice. But why now?
That's the question everyone asks. We went decades centuries, millennia really without se… [+4322 chars]
