In post 575. Textbook: The Rolling Stones, I mentioned the two interpretations of the asteroid belt that were current when I started reading science fiction. At that time, many believed that it was the result of the fourth planet being somehow blown up. There were plenty of science fiction stories about that lost planet’s civilization, including several which made it the source of humanity and the origin of the Atlantis myth.
The other interpretation was that the fourth planet was kept from forming by Jupiter’s gravity. A logical and prosaic theory and apparently the correct one. Occasionally, ignorance is bliss when writing science fiction. Does anyone else miss a swampy, dinosaur infested Venus?
Oh well, that’s okay. That’s what steampunk, fantasy, and alternate universes are for.
In Dreamsinger, I’ve managed to retrieve just a tiny touch of the old glory of an asteroid belt from an exploded planet, and it only came to me within the last few weeks. I had already tilted Stormking, way back when I was writing Cyan. The culprit was a rouge body passing through the Sirian system. I didn’t have to invent that; scientists believe that’s the way Uranus got tilted. I recently decided to make further use of it the rogue body by having it do major damage to planet number two.
I gave it a near miss. I may change my mind about that and give it a bullseye. I may even have my page-people discover that their scientists were wrong; that it wasn’t a near miss but a hit. Or maybe a so-near miss that the rogue was captured and is now part of the Swarm.
Here’s how it fell out in today’s (August 28th) rough draft.
Dreea was assigned to the cargo ship Typhoon. It seemed a silly name for a ship of space, especially one completely without streamlining. If it ever encountered a typhoon, it wouldn’t last thirty seconds.
Sirius was massive, and it’s system reflected the fact. The distance to the Goldilocks region was about five times as far as Sol to Earth, but it wasn’t a blown up model of the old Earth system. Having a second, shrunken star was enough to see to that, but it did have a hot planet close in and a more-or-less Earth sized planet in the third position. The planet which had held Venus’s position had been broken up by the same rogue body that had tilted Stormking.
That was important, and it was the reason that the Swarm was Typhoon‘s first destination.
The fourth planet in orbit of Sol had never coalesced because of perturbations from massive Jupiter. Consequently, all the asteroids in the belt were more or less uniform in composition. The beltmen of Sol had made a living there, but it had not been rich pickings.
The Venus-position planet circling Sirius had fully formed, with a core and tectonic plates. For billions of years gravity and convection has stirred the stuff of the second planet, and accumulated various minerals in their various places. Then the rogue body had passed so close that tidal stresses had shattered number two.
Pebble sized, and rock sized, and boulder sized, and mountain sized and continent sized chunks of the planet had been torn apart. The heat released had been tremendous. The outward force had been tremendous, but so was the combined gravity of all the pieces. Coalescence began at once, but gravity had to fight tidal forces, lateral velocities, and new heat energy when the pieces crashed together again.
After half a billion years, it had still not fully coalesced. It was still a mess, but it was a rich mess. It was as if someone had picked the Earth up, hit it with a giant hammer, and left all it’s mineral riches out in the open for easy exploitation.
Typhoon was to drop in, pick up a cargo of various minerals, and then proceed to Forge, the innermost planet where Sirius’s heat was abundant and open-air factories would turn Typhoon’s cargo into the goods needed throughout the system.
If you can call a factory open-air, on a planet whose atmosphere was long ago boiled away.