This still is boggling. The number of stars out there is beyond human comprehension. Zillions of planets just like Earth. Life?
We are microbes on the surface of a small planet.
Our planet orbits around a small, insignificant star – Sol.
Our star is out in an outer spiral arm of the Milky Way Galaxy – not even near the middle.
There are 400 billion stars in the Milky Way Galaxy. It is a mere 100,000 light years across. (It would take light 100,000 years to get from one side to the other!)
The biggest galaxies are 2 million light years across – hugely bigger – with 10 trillion stars. They make ours look tiny.
We know of 2 trillion galaxies so far.
The distances between them are beyond our comprehension. The universe is 46 Billion light years from the centre to the expanding edge.
Yet human beings, with our tiny brains, think we can understand something as stupendous as this. We can work out where it came from, its laws and its…
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