this question makes no sense.
Do u mean a 'lighyear'?
8.31 minutes @ the speed of light.
Yes, light can travel through outer space because it does not require a medium to propagate. In the vacuum of space, light can travel almost undisturbed for long distances until it interacts with matter.
A light year is a unit of space, not time. It is the distance light travels in a year. Eris is far less than a light year away.
123.40351046845905 Earth years.
Because I'm a genius.
It would take approximately 40,238 years to travel 20 light years at 36,000 mph. This calculation takes into account the limitations of current space travel technology and the vast distances involved in interstellar travel.
long time compare to earth
ostriches dont have space travel technology
Gamma Rays will travel as long as they have energy
The best thing to travel in would be a space ship. It is a long way to the planet of Mars.
With present technology it only takes a few minute to reach 'space'. To travel elsewhere would depend on your destination.
About an hour and a half.