How Many Galaxies Are There?

Our sun and the planets it holds in thrall, including our earth, reside in a small corner of a vast galaxy called the Milky Way, a swirling mass of dust, gas and billions of stars. The Milky Way is so huge that it takes light, traveling at 186,000 miles per second, 100,000 years to get from one end of the galaxy to the other.

Yet, as huge as it is, our galaxy is just one of billions of galaxies strewn across an incomprehensibly big universe. This short video explains how we know this:

Relative to all this our planet is an infinitesimally tiny speck and the inhabitants of our planet - us - are even tinier. It's no wonder that some philosophers have concluded that human beings and the quotidian pursuits in which we engage have no more significance than motes of dust bouncing around in a shaft of light.

Those philosophers are right - unless the universe was intentionally created and we were purposefully put here for a reason.