The Universe today is vastly expansive, cold, and filled with galaxies separated by immense distances. It has undergone 13.8 billion years of expansion and cooling. Early on, the Universe was smaller, denser, and hotter, possibly even reaching temperatures similar to those achieved in particle colliders. This raises the question of whether there was a time when the temperature in space was around room temperature, potentially supporting liquid water and the origins of life beyond Earth, hinting at diverse conditions for life's emergence in the cosmos.
Our Universe, as we observe it today, is vast and isolated, with enormous amounts of space between the stars, and with stars clustered into trillions of galaxies scattered across tens of billions of light-years.
At some point in cosmic history - in between then and now - the Universe itself must have been a rather temperate place: right around what we consider 'room temperature' today.
Could that have provided the perfect conditions for liquid water, and perhaps life, to have existed even in the depths of space?
Normally, when we talk about the origin of life, we assume a set of conditions that are similar to what was found in the environment of early Earth.
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