Although astronomers cannot directly witness the universe's formation, much of what we know about the Big Bang Theory comes from advanced mathematical models and simulations.
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Astronomers have discovered the Cosmic Microwave Background Radiation (CMBR), which comes from all directions in space. It’s a faint glow left over from the Big Bang.
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The temperature of the CMBR is about -270°C. This radiation is the remains of the thermal energy from the Big Bang.
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The universe is still expanding, with galaxies moving away from each other.
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Scientists continue to study the Big Bang Theory through advanced mathematical models and simulations, as well as observations of cosmic phenomena.
Photo Credit: NASA
Ongoing research is helping us understand the origins and evolution of the universe.