"The speed of light traveling through a vacuum is exactly 299,792,458 meters (983,571,056 feet) per second."
https://www.space.com/15830-light-speed.html
Solar Winds Plasma Atmosphere(Fluid)
"The solar wind is now know to be a mixture of materials found in the solar plasma, composed of ionized hydrogen (electrons and protons) with an 8% component of helium and trace amounts of heavy ions."
https://umbra.nascom.nasa.gov/spartan/the_solar_wind.html
"Some people estimate that 99.9% of everything in the universe is a plasma."
"HOST PADI BOYD: When those plasma particles leave the sun and head out in all directions into space, we call that solar wind and we now know that every planet in our solar system encounters some of that plasma."
https://www.nasa.gov/mediacast/plasma-plasma-everywhere
""If spacetime is a kind of fluid, then we must also take into account its viscosity and other dissipative effects, which had never been considered in detail".
Liberati and Maccione catalogued these effects and showed that viscosity tends to rapidly dissipate photons and other particles along their path, "And yet we can see photons travelling from astrophysical objects located millions of light years away!" he continues. "If spacetime is a fluid, then according to our calculations it must necessarily be a superfluid. This means that its viscosity value is extremely low, close to zero".
"We also predicted other weaker dissipative effects, which we might be able to see with future astrophysical observations."
https://phys.org/news/2014-04-liquid-spacetime-slippery-superfluid.html
Vacuum Bubble(Create Vacuum Bubble Around Spaceship Within The Plasma)
"Therefore, a spacecraft contained in a hyperfast bubble could arrive at its destination faster than light would in normal space without breaking any physical laws, even Einstein’s cosmic speed limit."
https://physicsworld.com/a/spacecraft-in-a-warp-bubble-could-travel-faster-than-light-claims-physicist/
"The ‘vessel’ described in the patent presents a cavity wall filled with gas, which is then vibrated using powerful electromagnetic waves. This creates a vacuum around the ship, which allows it to be driven at high speeds."
"The UFO-style ship can be used in water, air or even in space. “It is possible to imagine a hybrid aerospace / underwater spacecraft (HAUC), which due to the physical mechanisms enabled with the inertial mass reduction device, can function as a submersible vessel capable of extreme underwater speeds … and improved hidden capabilities,” says the patent."
https://thelifehacker.org/2019/05/20/us-navy-patented-an-aircraft-with-ufo-technology-documents-reveal/
Particle Accelerator(Near Light Speed Propulsion Inside A Vacuum Bubble)
"It is generally assumed that those engines were of the same EMG (Electro-Magnetic-Gravitic) type but other Allied Intelligence officers believe that they might have been photonic based on witness accounts of one large craft flying with a massive bright light source emitted from the rear."
http://greyfalcon.us/restored/Secret%20flying%20discs%20of%20the%20Third%20Reich.htm
"particle accelerators can accelerate positively charged hydrogen ions (protons) until their velocity approaches the speed of light. Each ion has a kinetic energy range of 100-1000+ MeV. The resulting high energy protons can capture electrons from electron emitter electrodes, and be thus electrically neutralized. This creates an electrically neutral beam of high energy hydrogen atoms, that can proceed in a straight line at near the speed of light to smash into its target and damage it.
The beam emitted may contain 1+ gigajoule of kinetic energy. The speed of a beam approaching that of light (299,792,458 m/s in a vacuum)"
https://en.wikipedia.org/wiki/Particle-beam_weapon