The article states
If the two black holes composing the newfound pair are equally distant from Earth, they're just 450 light-years apart and orbit each other every 4 million years
Can someone explain, or is this a typo? Do they not know if they're the same distance?
I ain't a space scientist, and I hope that what I say is correct --- please correct me if I am wrong --- what TFA is saying is, Black Hole 1 (Point A) and Black hole 2 (Point B) are spinning with each others and we are at a fixed reference point (Point C)
In other words, Point A, Point B and Point C make up a triangle, with Point A and Point B spinning with each other.
What TFA suggests is that when Black Hole 1 (Point A) and Black Hole 2 (Point B) happens to link to the fixed reference point (Point C) in which the distance of AC = BC , the distance of AB = 450 Light Years
As I have said, I ain't a space scientist, if I am incorrect, please correct me, thank you !