it would take about 12 weeks
The time would be T= d/c where d is the distance between Earth and Neptune and c is the speed of light.
Your question is not as hypothetical as you may think. Sunlight DOES travel at thespeed of 300,000 km per second. At that speed, once the light leaves the surfaceof the sun, it takes about 4hours20minutes for it to reach Neptune.
The only way to travel at the speed of light is to not have any mass.
To travel at the speed of light you would have to BE light so i guess you would became an even brighter light The switch to turn on the lights will work but no light will come on as you are already at that speed
It would take 65 years 11 months to travel to Aldebaran from Earth traversing at the speed of light.
The average distance from the Sun to Uranus is 2.88 billion km. The distance from the Earth to Uranus would vary depending upon if our planet is on the near side of the Sun from Uranus or the far side. If we take the average distance of the Sun to Uranus as a neutral point, and the speed of light is 300,000 km/sec --- (2.88 billion km) / (300,000 km/sec) = 9600 light sec, or about 160 light min, much, much less than a light year. In other words, traveling at the speed of light, it would only take about 2 1/2 hrs to get to Uranus. Light years are a term usually reserved for great distances, such as the distance between stars.
It could not travel at the speed of light. But hypothetically, it would glow.
The limitation of science and technology is the ability to travel at the speed of light and in order to travel at the speed of light we would need to find a way to not interact with the higgs boson. Since we are interacting with the higgs boson we can not travel at the speed of light.
No such thing would happen. Matter cannot reach the speed of light, only massless things can (and they cannot travel at any other speed than the speed of light).
Nothing with a rest mass can travel at exactly the speed of light, it would take an infinite amount of energy. Light can travel at that speed because it has zero rest mass. Earlier Answer below So far, we don't know if a human can travel at lightspeed. However, it's easier to travel at the speed of light than to travel through time. New Answer: The problem I always had with the term light speed is that speed is relative. We may be traveling close to the speed of light right now in relation to some other object in the universe.
The answer is neither.
Theoretically, it is possible to travel through time: by travelling at a great speed. But the speed at which you would have to travel would be faster than the speed of light, and would therefore kill every known living being.