In yesterday's episode, a space telescope (the Hubble I suppose) noticed something where there's just "empty space". If there was nothing there to see, why was it pointed there? I forget where they said it was in the sky, but someone more familiar with the sky might comment on that.
They said the new star would appear in the east, not the west, at a particular place. Doesn't the star start at the east and finish in the west, every night? The difference would be whether it's immediatly visible being night in Europe on the proper side.