4 The "Fermi Paradox" "Life cycle of a planet by Daniel Kadavy" touches on this Paradox because it states that intelligent life has to develop in time!

        "Intelligent Life" What does that mean, and why is that important? As stated in the paper "Life cycle of a planet", perpetual motion even on a planetary scale is impossible! Something will start to run out given enough time, that whatever type of life a planet has developed will cause changes in that life. The only example that mankind has is our planet! But it has shown many examples of that reality, most mammals (which category mankind falls into) goes extinct after about 1 million years, yet some have lasted for up to 10 million years. Some "Sharks" are basically unchanged after 200 million years! However, 99.9% of all species ever on the planet are now extinct!                                                                                                                  Why? For many reasons, but basically, because the conditions that are on the planet are constantly changing. Outside of the planet, the only real change is how much energy, both the sun puts out, and how much our planet receives! Then how often the planet has contact will other bodies in space. By far the greatest cause of changes on the planet is the life that our planet has! Many scientists count between 5-10 mass extinction events. What I see is a constantly changing environment, causing a constantly changing ability of that very life to be able to adapt to those changes!                                                                                     The Fermi Paradox, asks the question of why no visit from other life forms in such a huge Universe? There could be so many answers to that question, from "who says that has not been contacted" to Einstein's limitations of the speed of light and the immense distances involved, to the very real problem of intelligent life forming before the "Law that states Perpetual Motion is impossible with-out interference from that intelligent life form. And even perhaps the fact that no matter how much we what it to be, "Warp Speed" is not possible, or either is "Worm Holes"? There could also be the Lobsters in a lidless pot problem! 

    There will always be people willing to go into space to travel to distant worlds in search of something "more or different", but they are only a very small percentage of the population, while others will always want to read about them and the greater the challenges faced the happier will be those left behind be, safe in their lives, yet knowing that there are those of humanity whose will go to great extremes, makes them feel better for being a part of that stream of life. It is only our limitation of ability and knowledge that keeps mankind grounded to exploring our own solar system for now! I personally think we are doing a pretty good job on that, with several private individuals leading the way forward. The biggest challenge in space travel is escaping the Earth's gravity and we always believe we need to do that with massive amounts of fuel pushing a rocket forward until it reaches "escape velocity", which ends up using much of the vast amount of the fuel to simple lifting the fuel itself. So once we reach space where weight is much less an issue, there is only a small amount of fuel left to head out to the distance planet's we wish to explore. Excape velocity is around 25,000 miles per hour no matter what the load weight is, electromagnetic propulsion would reduce any need for fuel to reach excape velocity by slingshooting a payload into space where it would then either rendezous in space to be attached to another part or it could simply continul on to it objective. the tube needed to send something by electromagnetic propulsion, would need to be miles long to be able to get up to the necessary speeds to achieve excape velocity. There would not be any limit to how fast an object could go, but once outside the tube heat and friction against the atmosphere would be the factors you would have to deal with, and the materials that we can now design may not be up for such temperatures or the vibrations that always follow such speeds. Perhaps instead of trying to make a solid surface that could withstand such high heat and vibrations, the "ship"could have several layers that would melt away removing that heat with each layers removal? Not that much different than the release of the empty fuel tanks from normal rockets. Or think of how we can control our temperature by either adding or removing jackets or sweaters. Suppy "ships" could be both manned or unmaned, simply bringing necessary parts, energy, or supplies to a central located "station" or even "warehouse" in space. easy to keep stocked with minimal cost of transportation, and minimal chances of explosions causing injuries or death. Maintaining this area at the normal geo-orbit of around 22,500 miles would minimize any "drag" on such a processing area. Well anyway, not much in the way of talking about Gobal Warming or Climate Change except that any platform in otherspace that can help monitor the planets climate and weather patterns could always be useful. I can be reached by phone in the U.S.A. at 402-890-7946, or contact me at <daniel.kadavy212@gmail.com> or to read more from that crazy guy in Nebraska, https:lifecycleofaplanet.blogspot.com  Thank you and PLEASE tell others isn't that what the internet is really for, to keep the whole world informed?