The Big Bang Theory posits that the universe began approximately 13.8 billion years ago as an incredibly dense and hot singularity that rapidly expanded. This expansion led to the cooling of the universe, allowing for the formation of fundamental particles and, eventually, atoms. Over time, these atoms coalesced to form stars and galaxies, leading to the complex structures we observe today. The ongoing expansion of the universe continues to be supported by observations, such as the redshift of distant galaxies and the cosmic microwave background radiation.
in 3 to 5 sentences briefly describe how the big bang theory explains the origan and evolution of the universe.
3 answers
make it sound like an 8th grader
The Big Bang Theory explains that the universe started about 13.8 billion years ago with a huge explosion from a very tiny and hot point. As everything expanded, it cooled down, allowing tiny particles to form and stick together to make atoms. Over a long time, these atoms came together to create stars and galaxies, which grew into the universe we see today. Scientists know the universe is still expanding because we can see distant galaxies moving away from us and can detect leftover energy from the Big Bang.
1 answer