# What happens if a human travel at the speed of light?

What happens if a human travel at the speed of light? If an object ever did reach the speed of light, its mass would become infinite. And as a result, the energy required to move the object would also become infinite: an impossibility.

Why can’t we travel at the speed of light? Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second). Only massless particles, including photons, which make up light, can travel at that speed. It’s impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

Is light faster than darkness? Darkness travels at the speed of light. More accurately, darkness does not exist by itself as a unique physical entity, but is simply the absence of light. Any time you block out most of the light – for instance, by cupping your hands together – you get darkness.

Is anything faster than light? Albert Einstein’s special theory of relativity famously dictates that no known object can travel faster than the speed of light in vacuum, which is 299,792 km/s. This speed limit makes it unlikely that humans will ever be able to send spacecraft to explore beyond our local area of the Milky Way.

## What happens if a human travel at the speed of light? – Additional Questions

### How close to the speed of light can we get?

The most energetic particles ever made on Earth, which are protons at the Large Hadron Collider, can travel incredibly close to the speed of light in a vacuum: 299,792,455 meters-per-second, or 99.999999% the speed of light.

### What percentage of light speed can we travel?

Albert Einstein’s special theory of relativity states that photons—or particles of light—travel at a constant speed of 670,616,629 miles per hour. As far as we know, nothing can travel faster than this.

### What did Einstein say about the speed of light?

No matter how you measure it, the speed of light is always the same. Einstein’s crucial breakthrough about the nature of light, made in 1905, can be summed up in a deceptively simple statement: The speed of light is constant. So what does this sentence really mean?

### How long would it take to accelerate to light speed?

It would take 353,7 days of constant 1G (9,81 m/s^2) acceleration to reach the speed of light. In that time you would travel 4,58 billion Km.

### Do you age at the speed of light?

The simple answer is, anything moving through space at c, equal to the speed of light in a vacuum, experiences zero time flow. If you were to travel at the speed of light, you would experience no time.

### Can humans handle 10g?

At 1 second exposure a well-trained sitting human will survive 10g unharmed and will suffer severe injuries above 30g.

### How fast can a human go without dying?

Most of us can withstand up to 4-6G. Fighter pilots can manage up to about 9G for a second or two. But sustained G-forces of even 6G would be fatal. Astronauts endure around 3G on lift-off, one G of which is Earth’s own pull.

### How fast is 1g?

For example: An acceleration of 1 g equates to a rate of change in velocity of approximately 35 kilometres per hour (22 mph) for each second that elapses.

### How far can humans travel in space?

Even without invoking any new physics, we’d be able to travel surprisingly far in the Universe, reaching any object presently less than 18 billion light-years away. Here’s how we’d get there. This launch of the space shuttle Columbia in 1992 shows that acceleration isn’t just instantaneous

### What is the fastest thing in the universe?

Light is fast. In fact, it is the fastest thing that exists, and a law of the universe is that nothing can move faster than light. Light travels at 186,000 miles per second (300,000 kilometers per second) and can go from the Earth to the Moon in just over a second.

### Who stayed in space the longest?

Peggy Whitson set the record on Sept. 2, 2017, for most cumulative days living and working in space by a NASA astronaut at 665 days.

### What is the fastest moving object in the universe?

So the fastest thing in the universe is light.

### What is the oldest thing in the universe?

Astronomers have confirmed the discovery of one the oldest and most distant objects ever known in the universe — a star-forming galaxy 12.8 billion light-years away that started forming within a billion years of the Big Bang that kickstarted everything.

### What’s the slowest thing in the universe?

Xenon-124, one of the radioactive noble gases, has an extremely long half-life. The half-life of xenon-124, one isotope of xenon, was recently measured to be a trillion times longer than the age of the universe! This is the slowest process ever measured by direct observation.

### What is the biggest thing in the universe?

The biggest single entity that scientists have identified in the universe is a supercluster of galaxies called the Hercules-Corona Borealis Great Wall. It’s so wide that light takes about 10 billion years to move across the entire structure.

### How many universes are there?

In a new study, Stanford physicists Andrei Linde and Vitaly Vanchurin have calculated the number of all possible universes, coming up with an answer of 10^10^16.