A light year is not a unit of time but a big unit of distance. One light year is a distance covered by light in one year. It is 9,460,730,472,580,800 meters (5,880,000,000,000 miles).
The light year is often used to define distances to and between stars: a light year is not a unit of time. In astronomy, the preferred unit of measurement for such distances is the parsec, which is equal to approximately 3.26 light years. The parsec is preferred because it can be used more easily from observations. However, outside scientific circles, the term light year is more widely used by the general public.
It takes 8 minutes and 20 seconds for light to travel from the Sun to the Earth. The center of our galaxy, the Milky Way, is about 28,000 light years away. The Galaxy is about 100,000 light years across.
Locals hypothesize that the legacy of Italian blood and culture in Cologne, colonized by the Romans more than 1500 years ago, makes the people more jovial and lighthearted. Cologne is the largest city on the Rhine.
Kolsch is not only the dialect spoken here but, also the name of their own top-fermented beer. There are more than 4,000 pubs, restaurant's and brewery taverns in Cologne.
Unlike many of the world's large cities, Cologne, with a population of over a million, gets better every day, there are more things to do and see, more new and innovative buildings... more
Travel is an opportunity to learn, whether geography, languages, history or other subjects.
Cologne is situated on the beautiful Rhine River.