The Heat Death of the Universe - amazonia.fiocruz.br

Absolutely: The Heat Death of the Universe

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The Heat Death of the Universe - words

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Cosmologists have laid out five ages that encompass the lifespan of our universe. These progress from the raucous opening The Heat Death of the Universe of the Big Bang, through our current era, to a succession of ages that will result in the still endpoint of everything. This endpoint marks the time when cosmologists conjecture the universe will hit its final state, a mind-boggling 10 years from now. When poet T. Eliot wrote these words inhe may have been aware of the writings of Albert Einstein. In fact, apocalypse has been on the minds of many as we ponder the very distant future, and how the physical reality of the universe will eventually turn out. According to astrophysicists Fred Adams and Gregory Laughlin, in their book The Five Ages of the Universethe universe is progressing through five distinct eras, and we humans are currently in the midst of the second of five right now.

Here are all five, in chronological order:. The first era of the universe began with an extraordinarily active first second of time. Matter, which in the previous instant was squeezed into an infinitesimally small space, exploded with unbelievable force in every direction at once.

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Deaath Within that first second, the universe began its expansion through a process called cosmic inflationwhich carried matter exponentially faster as it gained distance, in time and space, from the Big Bang. In this era, which lasted for approximately one million years, the earliest elements, hydrogen and helium, appeared and formed stable atoms.

As Universw gases interacted with each other, the first chemical processes occurred, establishing the foundation for the next era: the Stelliferouswhich has featured star creation. Beginning around This is the era in which we live. During this time, galactic structures composed of billions and billions of stars formed. Life on Earth emerged, made possible only because planets coalesced in orbit around the Sun, including our home planet that was hospitable to elemental processes of The Heat Death of the Universe. The future evolution and duration of life on Earth is uncertain, but some forecasts are fairly clear.

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Around five billion tye from now, the Sun will begin to evolve into a red giant star. That will be the end of Homo sapiensif our species even still exists on Earth, as the expanding Sun will envelop the inner rocky planets, including ours. Artist's impression of early galaxy formation in the Primordial Era. Similar processes will happen throughout the universe.

Stars, trillions upon trillions of them, will progress through predictable phases, each toward their own demise, the complex interactions that allowed them to shine all played out. Last to go will be old, compact stars such as white dwarfs and neutron stars.]