light year

Here are twenty facts / useful information about the most interesting light, please read.

If your walk begins before the dinosaurs appear on Earth, then to complete the journey of a light-year, it has just finished recently.

When it comes to the distance of other Sun stars in our sky, people do not use miles or kilometers, but use a unit of measurement called Light years.

Dutch astronomers measured the relative distance between the earth and the nearest black hole.