(up until a few weeks ago the conventional scientific view of the galaxy was that there was a whole lot of empty space between solar systems, because planets were all orbiting around a sun. Now, scientists think there are probably just as many planets without suns, drifting around aimlessly in interstellar space – maybe even more.)
...and there was light
The whole thing about rogue planets is that, like with so many other great theories, it just seems obvious when you think about it. If you accept the big bang theory, and I do, as far as it goes (they’ve got ways of measuring how fast all the galaxies are flying apart from each other, the whole Doppler red shift thingie, so it seems natural to just trace everything back to a time when all of the matter in the known universe was clomped together in one big ball) then there’s no reason to think there wouldn’t be lots of debris adrift in space. It’s just the dust and rubble which is the natural result of an explosion.
I say “as far as it goes” because that just applies to this universe, and I suspect that universes are more numerous than galaxies in the same way that galaxies are more numerous than solar systems and there have been big bangs happening all over the place forever and for as far as the mind’s eye can imagine and then some.
But for now we are talking about this universe which is, apparently, a big cloud of dust and debris which hasn’t yet settled in the 13-14 billion years since the big bang, which is apparently analogous to the handful of seconds after the kind of an explosion we might see when, for instance, a building is imploded.
So, we assume now that the rogue planets are there. But finding them, discovering them, mapping them and actually traveling to them will take lifetimes, centuries, even millenia of painstakingly detailed effort. Because what it means, essentially, is trying to map a cloud of dust.
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