It takes sunlight about 27 years to reach Vega.
Polaris (North Star) is about 433 light years from us, so that is how long light will take to reach us.
Vega will be the north star in about 12,000 years time.
800,0000
It is approximately 1.52207x10^-5 light years. On average it takes just under 8.5 minutes for light to reach the earth from the sun.
The answer is right there in the words of the question. Radio and light are the same physical phenomenon, and they travel at the same speed. The star is 5 light years away. That means the distance that light ... and radio ... travel in five years. It takes light from the star 5 years to reach us, and it takes radio from us 5 years to reach the star.
8 billion light years means that the light has taken 8 billion years to reach you. That's how far into the past you are seeing.
I'm afraid you would never reach it. The furthest star, and thus the furthest galaxies are receding faster than the speed of light.
Well the answer is in the question. A light year is the distance it takes light to travel in one year. If something is a 100 light years away, then it will take light ..........
In our Solar System, we see light from our sun reflected off the planets. In more distant galaxies, light from many millions of stars takes a long time to reach the Earth. It takes light 4 years to reach the Earth from Sirius, a near neighbouring star. Using the Hubble telescope, we can see the light from the Eagle Nebula, which takes 7,000 years to reach the Earth.
Zeta Reticuli is approximately 39 lightyears away, it takes about 234 years to reach the system.
The OBSERVABLE Universe has a diameter of about 93 billion light-years. "Observable" means that the light of anything beyond that hasn't had time to reach us, since the time of the Big Bang.
"How many light years does Dschubba have?" "How many light years does Dschubba have?"