Question
What is the leftover thermal energy from the big bang
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GPT-4o mini
The leftover thermal energy from the Big Bang is primarily manifested today as the Cosmic Microwave Background (CMB) radiation. This radiation is a remnant of the early universe, dating back to about 380,000 years after the Big Bang when the universe cooled down enough for protons and electrons to combine and form neutral hydrogen atoms, allowing photons to travel freely through space.
The CMB is observed as a nearly uniform background radiation that fills the universe, with a temperature of about 2.7 Kelvin (-270.45 Celsius or -454.81 Fahrenheit). This radiation is a key piece of evidence for the Big Bang theory and provides information about the early state of the universe, including its expansion and the density of matter and energy.
In addition to the CMB, there is also some residual thermal energy in the universe, mainly in the form of non-relativistic particles (like neutrinos) and hot gas found in galaxy clusters. However, the CMB is the most significant remnant of the thermal energy from the Big Bang.
The CMB is observed as a nearly uniform background radiation that fills the universe, with a temperature of about 2.7 Kelvin (-270.45 Celsius or -454.81 Fahrenheit). This radiation is a key piece of evidence for the Big Bang theory and provides information about the early state of the universe, including its expansion and the density of matter and energy.
In addition to the CMB, there is also some residual thermal energy in the universe, mainly in the form of non-relativistic particles (like neutrinos) and hot gas found in galaxy clusters. However, the CMB is the most significant remnant of the thermal energy from the Big Bang.
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