Okay, so you should probably read this in a very hurried, out-of-breath voice, because that is how I usually explain this whole thing.

Time Travel is not possible. However, light travel is. Time is only a concept created by man to interpret the passage of light, and therefore does not exist. So, let us eradicate the phrase “time travel” from our dictionaries. To make light travel possible, we would have to invert the light cones. What is a light cone, you say?

Imagine an hourglass. The top triangle is the future light, the bottom triangle is the past light, and where they meet in the middle is the present light. The past light filters upward through the present and into the future. Simple.

You know how in elementary school, when you were taught to look at stars that the light hitting us was actually billions of years old, and that that star was most likely dead at this point? That is the most basic description of past light, or light that has already happened. Future light is light yet to come. So, the light that we see right now is present light.

So, the light being emitted from this example star is past light, however, we are seeing it as present light. Future light is light yet to be constructed. Make sense?

Okay, moving on. So let us say that we are on this example star. That would mean the light that is hitting us from Earth while we are on this star would be light that mingled with dinosaurs! But back on Earth, dinosaurs have been extinct for billions of years. So would this not be a way of light travel? What if we could reflect that light back onto Earth, and billions of years from now, Earth would see what would be our present light now, but the reflection would be the past light? That would mean the light on Earth billions of years from now is the future light. Essentially, we would be flipping the hourglass over, and filtering the future light into the past, making the future light actually the past light.

So reflecting the past light to the present, for us to see it in the future, or inverting the light cones as a whole, is my theory on light travel.

Is it perhaps a little easier to see how “time” travel is impossible? And how we as a whole should replace the phrase with light travel? Remember, time is the passage of light, and not a tangible concept. Light, however, can be harnessed, projected, reflected, and absorbed. So let us use light to see into the past, and one day we may create such an object that can harness light so well that we may actually walk amongst light. And that is my theory on time travel—brief and a little confusing.