Editing 2240: Timeline of the Universe
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* '''{{w|Timeline_of_epochs_in_cosmology#Lepton_epoch|Lepton Epoch}}''' (1 second after the Big Bang): Leptons, including electrons, and their associated neutrinos dominate. | * '''{{w|Timeline_of_epochs_in_cosmology#Lepton_epoch|Lepton Epoch}}''' (1 second after the Big Bang): Leptons, including electrons, and their associated neutrinos dominate. | ||
* '''{{w|Timeline_of_epochs_in_cosmology#Photon_epoch|Photon Epoch}}''' (10 seconds after the Big Bang): The universe is dominated by photons. | * '''{{w|Timeline_of_epochs_in_cosmology#Photon_epoch|Photon Epoch}}''' (10 seconds after the Big Bang): The universe is dominated by photons. | ||
β | * '''Cool Bug Epoch''' (a joke): There was a period around 10-17 million years after the Big Bang in which the cosmic background radiation was between 273 and 373 K, the temperature range for liquid water, but as oxygen had not yet been formed, as stars were not yet there to create it, there would have been no water. Cosmologists {{w|Avi_Loeb#Early_Universe|have speculated}} that primitive life could have arisen during this period and dubbed it the 'Habitable Epoch of the Early Universe', although it's unclear how this life would have formed since there was basically only hydrogen and helium atoms in the universe until the first Super Nova explosions some 100 million years later | + | * '''Cool Bug Epoch''' (a joke): There was a period around 10-17 million years after the Big Bang in which the cosmic background radiation was between 273 and 373 K, the temperature range for liquid water, but as oxygen had not yet been formed, as stars were not yet there to create it, there would have been no water. Cosmologists {{w|Avi_Loeb#Early_Universe|have speculated}} that primitive life could have arisen during this period and dubbed it the 'Habitable Epoch of the Early Universe', although it's unclear how this life would have formed since there was basically only hydrogen and helium atoms in the universe until the first Super Nova explosions some 100 million years later. |
* '''Molded grip''' (a joke): Some tools (e.g. knives) have molded finger-wells so that the user's hand settles easily and securely into a comfortable position. This epoch of the universe features repeated expansions and contractions so that this part of the timeline resembles a molded grip, at least in profile (it would be much too large to be held by any known animal's hands{{Citation needed}}, and the finger-wells are distributed over time as well as space). | * '''Molded grip''' (a joke): Some tools (e.g. knives) have molded finger-wells so that the user's hand settles easily and securely into a comfortable position. This epoch of the universe features repeated expansions and contractions so that this part of the timeline resembles a molded grip, at least in profile (it would be much too large to be held by any known animal's hands{{Citation needed}}, and the finger-wells are distributed over time as well as space). | ||
* '''{{w|Timeline_of_epochs_in_cosmology#Cosmic_Dark_Age|Stars form}}''' (100 million years after the Big Bang): The universe cools enough to allow ordinary matter particles to group into stars. | * '''{{w|Timeline_of_epochs_in_cosmology#Cosmic_Dark_Age|Stars form}}''' (100 million years after the Big Bang): The universe cools enough to allow ordinary matter particles to group into stars. |