Check this link out – it is the Hubble Deep Field image. In the image there are roughly 3000 objects; almost all are galaxies.
The image is a composite of 342 separate images, and only covers two parts in a million of the whole sky. Just to give you a bit of perspective…
The outline above is the section of the sky in the original picture.
Remember that galaxies have solar systems, the milky way has roughly 300 billion solar systems alone. If we assume the milky way is representative of galaxies throughout the Hubble Deep Field image, that means you and I are looking at 900,000,000,000,000 solar systems – that is 900 Trillion solar systems.
If we assume that every galaxy has only one solar system that supports life that means there are 3,000 other instances of life (on some level) at the minimum with the potential of up to 900 Trillion others…. and, again, this is a fraction of the sky.
Anyone who thinks life is confined to planet earth needs to look at the image above and then do some reading up on probability theory.
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