So it's a black hole that's kind of wandering around through space.

We have not found anything. I just want to make that really clear.

We can get rogue black holes. It's not quite as surprising that we can get rogue stars.

Hello, welcome to the supermassive podcast from the Royal Astronomical Society with me, science

journalist Izzy Clark and astrophysicist Dr Becky Smethurst.

In this episode, we are going rogue.

It's all about the non-conforming objects in space, black holes, planets and other rogue objects

that we can think of.

It sounds like a science fiction episode, you know, when planets go rogue.

I think we added to this ever-growing list of like science fiction films that we will never make or envision.

Someone out there can.

Someone out there wills.

You know where those like creative writing classes where they get prompt?

Here's your creative writing prompt for this week, right? When planets go rogue. Put us in your acknowledgements. Thank you very much. You very welcome. And shout out to listener Mike in Oregon who actually recommended that we cover this as a topic. Yes, thank you, Mike. So Dr. Robert Massey, the deputy director of the Royal Astronomical Society, is also here, obviously, it's not an episode without him.

So, Robert, can you just give us a quick rundown of what exactly is a rogue object?

I'm just thinking of those B-movie titles now, is it?

But yeah, I mean, rogue objects in astronomy, they're not inherently

evil, they're not bad, but they are a bit unconventional. So there's everything from rogue

asteroids and comets to interstellar space, so ones that aren't bound to any star. And you can think

of those as, there are examples of those that come into the solar system from time to time.

So think Umuamoa and Atlas as transient visitors that

came by the sun and then disappeared back into stellar space. The rogue stars founded intergalactic

...