The circumference of the Earth is ~24902 miles or 40,076,000 meters.
This speed of light is 299,792,458 m/s.
So it takes 0.134 seconds to go around the earth once.
Traveling at the speed of light, it would take a spacecraft 40 years to reach a star located 40 light-years away from Earth.
If the light is in a vacuum then it would take around 0.00000033 seconds.
It would take infinitely long in both time and space, and require and infinite amount of energy to accelerate any object with mass to the speed of light. In other words, it is impossible to reach the speed of light. Einstein's equations show that as an object approaches the speed of light, it's kinetic energy is converted to mass making it heavier and heavier, require more force and energy to accelerate it. As a result at 99.999999% the speed of light the object would be come so massive that it would require more energy than the universe contains to push it fast enough to be going the speed of light.
Traveling at the speed of light, it would take a spacecraft 40 years to reach a star located 40 lightyears away from Earth.
Light does not accelerate in the traditional sense, as it always travels at a constant speed of approximately 299,792 kilometers per second in a vacuum. This speed is a fundamental constant in physics known as the speed of light.
It takes about 1.28 seconds for light to travel from the moon to Earth. So if the moon were to travel at the speed of light, it would complete an orbit around the Earth in approximately 1.28 seconds.
One light-year is the distance light travels in one year, which is about 5.88 trillion miles. Light doesn't orbit the Earth, but if you're asking how long it takes light to travel around the Earth's circumference once, at the speed of light (about 186,282 miles per second), it would take only about 0.13 seconds.
Speed=3x10^8 m/s Time=8.3168708 minutes
It would take approximately 65 years to travel at the speed of light from Earth to Aldebaran, which is about 65 light-years away. However, currently, we do not have the technology to travel at the speed of light.
3 days
About 1.5 seconds
As long as it remains in the vacuum in the vacuum, the speed of the light doesn't change at all.
At its average distance from the earth, the moon is 1.28 light seconds away.
A few kilometers. It takes light about 8 minutes to reach Earth.
That depends on the speed. The circumference of the Earth is 40,000 km. Decide on a speed, then divide this distance by the speed. If the speed is in km/hour, the time will be in hours.
The speed of light is 300,000 km/second. If you divide the distance by this speed of light, you get the time in seconds: 1.28.
Sunlight takes 8.4 minutes to travel 93 million miles to Earth. It would take us that long to reach the Sun at light speed.