3 comments on “Billions and Billions of….

  1. I always wondered how do we determine the distance. How can we say certain light traveled 12 billion light years.

  2. You have the same thoughts as myself Carolyn, and I guess a majority of those reading this wonderful post.

    Of course what you so eloquently describe is just the visible universe! How much more of it is there from which light has not had time to travel in the 13.7 billion years since the Big Bang? And are there other universes as postulated by some proponents of string theory such as Michio Kaku?

    My own view is in line with the Principle of Mediocrity/Copernican Principle… although as human beings we may be unique (assuming that the universe is not infinite in which case there would be an infinite number of instances where human beings have independently evolved), other intelligent life is bound to have evolved somewhere else. After all, the laws of physics, as far as we can tell are the same throughout the 200 billion galaxies, each of which contain a similar number of stars.

    It’s just a good job we don’t live in the seventeenth century. Giordano Bruno was burned at the stake for making public such views!!!

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