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Message: <blockquote data-quote="Thomas Bowman" data-source="post: 7411157" data-attributes="member: 6925649">Not sure what I want to do with them, they could be the same star system at different points in time. Part of the point of this map is to allow for incidental time travel as well. The situation is an alien race set up these wormholes a billion of years ago, and over a long period of time, a time differential developed between the ends of these wormholes due to their different gravitational potential, and to the speeds these wormholes were transported at, highly relativistic speeds. Originally the aliens had a home world, and they build wormholes, they accelerated one end of each wormhole towards the system they wanted to colonize and explore. The didn't mind that when they traveled through the wormhole they were also traveling into their local future, and they fact that they could also travel back into the past where their home world was located wasn't a problem either. These aliens set up machines to build and transport their wormholes, so they could colonize other stars, and the machines spread out building more and more wormholes, even outstripping the original aliens ability to colonize those place, those wormholes expanded beyond their home galaxy, and the machines kept on reproducing themselves and building more wormholes in an outward expansion waves radiation away from the aliens' original home world. the wormhole network now forms a sphere about one billion light years in radius centered on what used to be the alien's home world in a different galaxy. That species of alien is now extinct or they evolved into something else, all that is left is their automatic wormhole building machinery that even today continues to build ever more wormholes connecting ever more star systems. Over time the stars have moved in their positions in relation to each other, now the wormholes seem random as the stars have moved around the galaxy and changed their positions. Some human colonies have gained sufficient tech to build their own wormholes and transport them, but their is very little reason for them to do so, as their are already so many wormholes all throughout the galaxy. Because of the time differential, we have humans from the local future meeting humans from the past and causing multiple timelines to appear due to the time paradoxes that are created through such contacts. Few of those wormholes actually connect directly to Earth's past, but a slower than light spaceship can reach them from the nearest wormhole opening in the networks. This usually involves a journey of several years for the fast starships or a journey of several decades for the slower ones.Fusion powered spaceships can only reach 10% of the speed of light when allowing for remaining fuel to slow down again, or they can reach 20% of the speed of light when they don't slow down. Some faster ships are available but expensive. Antimatter is very expensive to produce. Another type of drive is a black hole drive. Black holes are produced by focusing a lot of laser light into a tiny portion of space thereby producing a black hole. Small ones with the mass of a cargo tanker on Earth's oceans will radiate their mass away in the form of Hawking radiation in a matter of years, and the black holes are usually discarded after wards so they can explode at a safe distance away from the ship.Wormholes can also be used as a propulsive device. A civilization can make a small wormhole, place it in a spaceship, and the spaceship comes with a supply of matter to use as fuel, it doesn't matter what kind of matter. the ship pumps the matter through the wormhole, and on the other side of the wormhole on the home base, a particle accelerator fires a relativistic beam of charged particles at nearly the speed of light in the opposite direction through the wormhole where the matter is being pumped, in that respect the mass-energy flow of matter through the wormhole is balanced, matter is pumped at a low velocity through the wormhole towards the home base, and a giant particle accelerator many time the mass of the starship fires a highly relativistic beam back through the wormhole, achieving a very high efficiency of thrust that would not otherwise be possible with a self-contained starship. This lasts until the starship runs out of mass to push through the wormhole, but a very high fraction of the speed of light can be obtained through this method. the wormhole can then be slowed down again and the two ends can form a time machine which connects two different points in time. Wormholes are expensive to make, just like black holes and antimatter, the main difference is that wormholes are reusable while black holes are not, and of course once the antimatter us expended its gone.Since their are many worlds from different times in different parts of space, then 25th century Earth can encounter worlds that have been colonized by humans from Earth thousands of years ago. Intelligent aliens are scarce, non-intelligent ones are more common. Humans typically encounter other humans through this wormhole network, some from the future, and sometimes they reach out to some humans who are living on a past Earth. the only Earth that is connected directly by wormholes within the same star system is 25th century Earth. if you want to travel to Renaissance Europe for instance, you need to find a nearby star system on the wormhole network and then use a slower than light starship to travel across the gap in light years. For civilizations that can make their own wormholes, they can carry one end of a wormhole to this past Earth and then once there, they can use it as a two-way gate to this past Solar System and interact with the inhabitants of this past Earth, and this changing history along the way, producing another timeline that is nevertheless connected to the original one by the wormhole thus created.It is expensive to do this however, so there needs to be a good reason for people to visit this past Earth in what becomes another universe. Most of the time variation is +/- 10,000 years from the current present Earth of the 25th century, this no dinosaurs can be encountered, the ringworld in the future might have some however, whether they are from Earth's past or genetically created by the ringworld builders is another story. It appears the ringworld builders of this alternate version of the Solar System were not aware of wormholes existing, so they instead built this artificial ringworld with a surface area millions of times that of Earth's surface which they could settle.<img src="http://news.povray.org/povray.binaries.images/attachment/%3Cweb.4360929f30852916731f01d10%40news.povray.org%3E/ringworld_1.jpg" alt="" class="fr-fic fr-dii fr-draggable " data-size="" style="" /></blockquote>

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