Space Age - Tech Ideas - Speed of Light

Sustainable space travel requires the 5 following fundamental technological advancements: 

1- Anti-cosmic rays shielding
2- Antigravity devices or systems
3- A free energy device
4- A propulsion system without propellant
5- A.I. systems for navigation purposes at relativistic speeds and above

1. Anti-Cosmic Rays Shielding
 
Developing effective shielding against cosmic rays is paramount for human safety in space. Regardless of the possibility to achieve FTL or not, sustainable space travel includes the eventuality to “work“ and perform any possible tasks in space requiring a protection against harmful radiations…
 
Renuclearization: 
I hypothesize a process that I term “renuclearization,” where the atomic structure of materials can be manipulated using electromagnetic fields (EMF - gamma rays). By combining ionization with renuclearization, we may be able to engineer exotic materials at subatomic scale capable of absorbing or reflecting harmful radiation. Such a method might eventually enable to create all possible materials…
 
Such materials could for instance mimic the Earth’s magnetic field that protects us against cosmic rays. We could create materials naturally emanating a shielding EMF field such as magnets and electrets. Optionally the simple composition and arrangement of particles will suffice for shielding. I am aware of the extremely theoretical aspect of this idea. But considering the observable effects of ionizing radiation and of gamma rays -being able to modify atom cores-, this idea is not ridiculous at all. Far from being feasible but not impossible either…

Furthermore, I anticipate that such shielding materials will absorb EMF waves and visible light and/or unusually deflect them. This could explain why extremely highly hypothetical vehicles from non-human civilizations are not visible…

Such a shielding is all the more important at FTL speeds, since the shock even against single particles is dramatically amplified…

2. Antigravity Devices or Systems
 
Exploration of Concepts: 
While mainstream science often regards antigravity as speculative, one potential approach involves manipulating magnetic fields and utilizing electrogravitics (the interaction between electricity and gravity). This could be achieved by creating materials with inverse polarity to Earth’s magnetic field. Optionally it is also possible to create materials with opposite polarities creating a net propulsive force. It is important to precise that this is not my idea: see the Biefeld-Brown effect…
 
Alternative Methods:
Acoustic Levitation: Exploring potential applications for heavier objects.
Mechanical Antigravity: Inspired by gravitational interactions at Lagrange points.
Proposed Experiment: A gravity wheel experiment could provide insights into inertial forces and potential weight reduction mechanisms. When holding a gravitation wheel, we feel the gravitational force applied to the axle. Thus similarly to the Lagrange points, I imagined an experiment in which the axles of 2 gravitation wheels conveying opposite forces are brought in contact. Then we could observe how the forces cancel each other and if this cancellation can be transmitted to other objects. One possibility is to immerse the contact point of the axles in water and observe if any reaction occurs. Optionally we could install an object at the contact point of the axles. This object would be linked to a weight scale in order to see if the cancellation of the opposite gravitational forces of the axles is transferred to the object which would lose weight…
 
3. Free Energy Systems

Without “free energy“, no sustainable space travel is possible.

Definition and Hypothesis: “Free energy” should be understood as a means to enhance energy output. Let us take the example of solar energy. It consists in harnessing photons and transforming them into electricity. Similarly by harnessing ambient EMF waves present in space, we could theoretically harness countless amounts of energy. Interestingly, in the process of solar panels, photons are smaller particles used to bring bigger particles -electrons- in motion. As if it was a “domino effect“. Is it possible to create materials reproducing such a domino effect where 1 electron pushes 2 other electrons, each of them pushing 2 further electrons? If such materials exist, then we could imagine a system in which 1 Watt could give an output of 100W or even 1000W. In such a case a part of the output could be used to supply the input. I would name such a system a closed loop generator.
Thus the two methods I see are:
1- Harnessing high energy photons available in space
2- A closed loop generator

4. Propulsion Without Propellant
 
Innovative Approach: Drawing inspiration from cathodic tubes found in television screens, we propose the concept of “cathodic propulsion”. Technically considered, a cathodic tube is a cathode in a vacuum, just like is space… Possibly, coupling this cathode to a magnetic tube to accelerate  particles could create thrust without the need for propellant.
 
Integration with Energy Systems: Combining this propulsion method with the previously discussed free energy systems could present a groundbreaking advancement in practical space travel.
 
5. AI Systems for Navigation

Role of AI: As travel speeds approach relativistic levels, traditional navigation methods become ineffective. Autonomous AI systems will be crucial for real-time navigation, ensuring precise control in high-speed environments.
 
Considerations for Design: Future spacecraft will need to encompass both propulsion and retro-propulsion mechanisms, enabling seamless transitions in movement direction. This realistic architecture differs significantly from current aircraft designs, or even from our traditional sci-fi designs. I anticipate the following not to be taken seriously, but if “flying saucers“ indeed exist, this could explain their shape without front and back side, just a disk…

Conclusion
 
These ideas are indeed extremely unusual, but obviously sustainable space travel requires to think out of the box of “mainstream science“. Although many concepts remain speculative, they are theoretically not impossible. Looking forward for your feedback for a constructive discussion… Cheers!