As much as we've tried, no one's yet found a loophole in the equations. Regardless of its rest mass, pushing a chunk of matter to the speed of light would result in its acquiring infinite mass, and thus requiring an infinite amount of energy to put it "over the top."
Einstein may not have said it in so many words, but the short answer is, "You can't get there from here" -- if you took all the energy in the observable universe, rounded it up into the biggest laser ever and pointed it at a single electron, you couldn't push that electron to the speed of light. Ever.
The energy required for a spaceship to travel at 90 percent of the speed of light would be substantial due to the relativistic increase in kinetic energy as speed approaches the speed of light. The energy required can be calculated using Einstein's mass-energy equivalence formula, E=mc^2. The exact amount of energy would depend on the mass of the spaceship and would be calculated as the difference in energy between its rest mass and its kinetic energy at that speed.
No - you would be stopped BEFORE you reach the speed of light, by your increasing mass (among other things). As your speed approaches the speed of light, your mass would approach infinity, and it would require an infinite energy to actually achieve the speed of light.Note that the "speed of light" is not really about light. It is a speed limit of our Universe; some have described it as the "speed of causality".
No, matter does not turn into light when achieving the speed of light. As an object with mass accelerates towards the speed of light, its energy increases, but it does not transform into light. It would require an infinite amount of energy to accelerate an object with mass to the speed of light.
The short answer is: they can't. Protons, or any other particle that has mass, can't go at the speed of light because it would take infinite energy to get it going that fast. In particle accelerators, they make protons collide at a speed very slightly less than the speed of light, something like 99.99% of the speed of light. It takes a lot of energy to get the protons going that fast, and all of that energy is released in the collision, hopefully making some interesting results.
Yes, according to our current understanding of physics, the speed of light in a vacuum is the fastest speed at which energy, matter, and information can travel. Any object with mass that approaches the speed of light would require an infinite amount of energy to accelerate further.
No, a person can not run at the speed of light. To make something move faster and faster you need more and more energy, and the more mass it has, even more energy it needs to move. The reason why light can travel at its own speed is because it has no mass, and it would take an infinite amount of energy to make something with even the slightest amount of mass to make something move at the speed of light.
As the speed of an object approaches the speed of light, its kinetic energy approaches infinity. An object moving at the speed of light would require inifinite kinetic energy.
The energy required for a spaceship to travel at 90 percent of the speed of light would be substantial due to the relativistic increase in kinetic energy as speed approaches the speed of light. The energy required can be calculated using Einstein's mass-energy equivalence formula, E=mc^2. The exact amount of energy would depend on the mass of the spaceship and would be calculated as the difference in energy between its rest mass and its kinetic energy at that speed.
You would have infinite mass and infinite length. From your perspective, you would get to your destination in zero time.If you have finite mass now, it would require infinite energy to attain the speed of light, so this can never happen.
No - you would be stopped BEFORE you reach the speed of light, by your increasing mass (among other things). As your speed approaches the speed of light, your mass would approach infinity, and it would require an infinite energy to actually achieve the speed of light.Note that the "speed of light" is not really about light. It is a speed limit of our Universe; some have described it as the "speed of causality".
No, matter does not turn into light when achieving the speed of light. As an object with mass accelerates towards the speed of light, its energy increases, but it does not transform into light. It would require an infinite amount of energy to accelerate an object with mass to the speed of light.
No, a time machine would require you to travel faster than the speed of light, which would cause you to turn into pure energy. If scientists found a way to make something travel at this speed, it would not last long.
It would turn to energy
The short answer is: they can't. Protons, or any other particle that has mass, can't go at the speed of light because it would take infinite energy to get it going that fast. In particle accelerators, they make protons collide at a speed very slightly less than the speed of light, something like 99.99% of the speed of light. It takes a lot of energy to get the protons going that fast, and all of that energy is released in the collision, hopefully making some interesting results.
Yes, according to our current understanding of physics, the speed of light in a vacuum is the fastest speed at which energy, matter, and information can travel. Any object with mass that approaches the speed of light would require an infinite amount of energy to accelerate further.
If something were to move faster than the speed of light, it would violate the laws of physics as we currently understand them. According to Einstein's theory of relativity, an object with mass cannot reach or exceed the speed of light, as its mass would approach infinity and require an infinite amount of energy.
you do not; it would take way too much energy to do this because your mass is so great. Small subatomic particles can be accelerated to close to he speed of light and they require a lot of energy from a particle accelerator. Nothing can reach the speed of light as it would take an infinite amount of energy