Distance from the star.

Most of us remember the first verse of "twinkle, twinkle little star".

Twinkle, twinkle, little star,.
I wonder what you are!
While high.
Like diamonds in the sky!

But the world will star in?

Stars on Sunday, near the world average of about 92955807 miles (149597870 km) from us. On a large number of fairly complex. Astronomers have a name so great to get to this point. "Astronomical Unit" (or "the AU" for short). Therefore, soil is defined (on average), from Sunday at 1 AU. The AU useful if you're interested in distance between the planets of the solar system. For example, while the Earth orbits the Sun at 1.0 AU, Saturn the planet orbits the Sun 9.53 AU. Then Saturday at 8.53 AU from Earth orbit is not the case Sunday.

But when it came from other stars is always a good start numbers. For example, with the exception of Sunday, the nearest star is Proxima Centauri in the world. Stars begin to 265,608 AU from Earth on 24689794389764 miles (39734372462400 or kilometers) .. To avoid such a large number of remote devices to astronomers -. the "light year." Some people confuse words "a" and "light years" is a measure time. This is the only pole in the annulment of the time in light years - is "light years". Light about 6 billion miles (about 9 billion a. M) in a year. Light year is about 6 billion miles (9 million km.). Proxima Centauri about 4-2 years from Earth - light - is easier to use miles. 24689794389764!

Since light is the distance in light years, one year and is Proxima Centauri 4-2 light years from Earth, meaning that if you Proxima Centauri camera you can see light through a production 4-2 years! While much space for SF stories for the future, if the stars of last night really brilliant.

by Richard Pickering