93 million miles

Actually 92,955,807 miles to be precise.  This is the average distance between the Sun and the Earth.  This is the distance that electromagnetic waves of light need to travel to provide us with light, heat and energy.

 

Light travels at 186,000 miles per second.   Light would travel around the equator 7.5 times in one second but it takes 8 minutes to reach us from the Sun.  So when you look (carefully) at the Sun you are actually looking back in time to how the Sun looked 8 minutes ago.

 

The next nearest star is Proxima Centauri.  It is 4.22 light years away.  Therefore, it takes the light from Proxima Centauri almost 4 years and 3 months to reach the Earth.

 

There are approximately 1,000,000,000,000,000,000,000 (1 billion trillion) stars in the visible universe.  Once you start multiplying all these numbers out to try to calculate the scale of the universe you begin to raise how small we are.

 

Why is this relevant?  Well without any of this light, photography would be impossible.  Now i know what people mean when they 'thank their lucky stars'.