But, notwithstanding, we feel and know that we are eternal

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Take a look at your hands. In them, you find atoms that once belonged to stars dead more than five billion years ago. Those stars, bigger than our sun, forged much of the chemistry of life during their last moments, before exploding into giant supernovae. They forged chemical elements spread through the interstellar medium, collecting here and there in self-gravitating hydrogen clouds. Occasionally, these clouds would become unstable to their own gravity and contract. These contracting nebulae gave rise to stars and their orbiting planets, trillions of them in our Milky Way alone.

In at least one of them, elements combined in incredibly complex ways to create living creatures. And of these myriad beings, one developed mind, the ability to sustain complex thoughts and to wonder about its origins.

We are, in a very real sense, self-aware stardust. (…)

There are many gaps to fill in this cosmic narrative, and this is what makes science exciting. As we thrust ahead, we learn more about the universe and our place in it. Perhaps one of the most controversial questions that follows from this discussion concerns our inevitability. Is our existence an inevitable consequence of the laws of Nature? Or are we an accident, and the cosmos could equally well exist without us?

{ Marcelo Gleiser | Continue reading }