Does anyone have a rough estimate about the difference in time-of-flight for an object taking the "interplanetary highway" versus the old-fasioned fuel assisted "off-road" travel? I would imagine that in some cases the fuel and gravity assisted flights, while more expensive, would be able to reach its destination faster than some of the roundabout pathways of the highway.(?) Or is the travel time difference not very substantial for an interplanetary mission because the old-fasioned travel methods involved their own roundabout gravity assists from various intermediary planets along the way to its real destination?
This theory of habitable galactic zones is much like the concept of habitable zones in a solar system. Just as the Earth happens to be within the proper zonal distance from the Sun, not too hot and not too cold, which allows for liquid water and also many important chemical reactions, being just the right distance from a galactic core also allows the right environmental conditions to develop life (at least in the form as we know it).
For example, being too close to a galactic core would increase the amount of energetic X-ray, gamma ray, and cosmic ray flux on any nearby solar system, thus irradiating any possible life forms. Also, living in a region of space with the stellar densities that exist near a galactic core would increase your chances of being within the blast radius of a nearby stellar neighbor who happens to go supernova. Also, the closer a solar system is to another solar system, the greater the gravitational interactions between them, thus causing random orbital disturbances that can cause asteroid/comet belts to migrate around their star and maybe run you over in the process.
For more information you can try this interesting arcticle.
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Does anyone have a rough estimate about the difference in time-of-flight for an object taking the "interplanetary highway" versus the old-fasioned fuel assisted "off-road" travel? I would imagine that in some cases the fuel and gravity assisted flights, while more expensive, would be able to reach its destination faster than some of the roundabout pathways of the highway.(?) Or is the travel time difference not very substantial for an interplanetary mission because the old-fasioned travel methods involved their own roundabout gravity assists from various intermediary planets along the way to its real destination?
This theory of habitable galactic zones is much like the concept of habitable zones in a solar system. Just as the Earth happens to be within the proper zonal distance from the Sun, not too hot and not too cold, which allows for liquid water and also many important chemical reactions, being just the right distance from a galactic core also allows the right environmental conditions to develop life (at least in the form as we know it). For example, being too close to a galactic core would increase the amount of energetic X-ray, gamma ray, and cosmic ray flux on any nearby solar system, thus irradiating any possible life forms. Also, living in a region of space with the stellar densities that exist near a galactic core would increase your chances of being within the blast radius of a nearby stellar neighbor who happens to go supernova. Also, the closer a solar system is to another solar system, the greater the gravitational interactions between them, thus causing random orbital disturbances that can cause asteroid/comet belts to migrate around their star and maybe run you over in the process. For more information you can try this interesting arcticle.