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lwymarie
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at the beginning of the universe, is light's speed faster than nowadays?
lwymarie said:at the beginning of the universe, is light's speed faster than nowadays?
lwymarie said:at the beginning of the universe, is light's speed faster than nowadays?
The Big Bang Theory is a scientific explanation for the origin and expansion of the universe. It proposes that about 13.8 billion years ago, all matter and energy in the universe was condensed into a single point, known as a singularity. This singularity then rapidly expanded, creating the universe as we know it.
Scientists have gathered evidence from various fields such as physics, astronomy, and cosmology to support the Big Bang Theory. One key piece of evidence is the cosmic microwave background radiation, which is the remnant heat leftover from the explosion of the singularity. This radiation is found throughout the universe and is a strong indication that the universe began with the Big Bang.
The concept of "before" the Big Bang is difficult to understand because time and space as we know it did not exist before the universe began. Some theories suggest that the singularity may have been preceded by a previous universe or that the concept of time may not apply to the singularity.
The universe expanded and continues to expand due to a phenomenon called inflation. Inflation is a rapid expansion of the universe that occurred immediately after the Big Bang. It is thought to be driven by a repulsive force called dark energy, which is still not fully understood by scientists.
Based on current scientific understanding, the universe will continue to expand forever. As it expands, galaxies will become further apart, and the universe will become colder and darker. Some theories suggest that eventually, the expansion may accelerate, leading to a "Big Rip" where the universe will tear apart completely.