## Light Year and the Mathematics of the Stars

Last week, we have talked about **large numbers and one million**. In this post, we will talk about some of the practical uses of large numbers.

One of the uses of large numbers is to measure long distances; for instance, distance between celestial objects. Shown below is a table of the distances of the planets from the sun and from earth rounded off to the nearest thousand kilometers. Giving a speed of a commercial airline (approximately 500 kilometers per hour), a trip from Earth to Venus will require us 10 years of travel while traveling to Pluto will require us 1,306 years. Shocked?

**By the way, Pluto has recently been demoted. Recent updates made it clear that it does not qualify being one of the planets.* » Read more