Two monster black holes could collide in just 100 years
A 121-day orbit for something as massive as a supermassive black hole is absurd. These objects are supposed to take thousands of years to circle each other, yet here we have a pair moving like they're in a hurry. The fact that a previously unseen jet tipped astronomers off makes me wonder what else is hiding in galaxies we thought we had mapped out.
I think the most exciting part is the timeline. A merger in 100 years means we might actually be around to watch it happen. Gravitational wave observatories could catch the final spiraling moments, and we would finally see what happens when two galactic cores decide to become one. I would love to know how the jet stayed hidden for so long, and what the exact masses are, because that determines whether this is a century or a millennium away.
If this holds up, it changes how we think about galaxy evolution. Mergers like this are probably common, but catching one this close to the finish line is rare. I hope the follow-up observations come fast, because a deadline of 100 years is the kind of appointment you do not want to miss.