Our star system, before the Solar System

Nebular Hypothesis postulates that our solar system formed from a nebulous cloud, which may have been formed through the supernova explosion of a previous star. That previous star may also have had planets orbiting it.

Strange to think that where we live may once have been another star, and another set of planets - and that our Solar System is merely the most recent tenant in a long inhabited section of space.

Additionally, I've seen reference to our sun as a "third generation star". Which suggests that not simply one, but two star systems, originally stood in our place. More interestingly, it would be possible for some of those original, early planets to have been ejected into space rather than be destroyed.

Somewhere out there, across the universe, we may have sibling planets.

Just thinking aloud.

Oddly
I = most recent stars (most metallic). Some planets most likely to have iron cores.
II = Older stars. Rocky planets possible, iron cores less likely.
III = Dawn of universe stars (only hydrogen & helium). Unlikely to have rocky planets.

Metallic in cosmological terms just means how many elements beyond Hydrogen and Helium a star has.

Yes, we are in a low density "bubble" in space, which is evidence of a rather large super nova event.

It's a very weird thought. But then, astronomy seems a bit crazy generally (for example, the sky we see at night is a patchwork of different periods of long-distant history).

There's a fascinating looking programme on tv tonight about a related subject - solar system mechanics. Horizon, 9pm.

I hope it's not as dumbed down, full of fallacies, pseudo science/magic and worst pop science as most Horizon programs have been in last lot of years. Horizon used to have real science and interview proper scientists properly.

Well, I watched it, thought it was pretty good, and duly went "wow!" a few times.