Philosophy

What is the Hot Big Bang Theory? What does the Hot Big Bang model tell us about the initial state of the universe? According to the Hot Big Bang Theory, the post-Big-Bang universe was extremely hot (hence the name). Because of that, particles were moving too quickly to coalesce together and form the building blocks of matter. The Hot Big Bang Theory explains a lot about the observable universe, but not everything. Here are some things it doesn’t account for.

Why is the universe seem as though it was fine-tuned for us to exist? How do the parameters of the universe happen to be calibrated just right to make life possible? One could just go the theological route to answer these questions about the perfect, seemingly fine-tuned universe. Maybe God just created these conditions for unknowable reasons we can never uncover. This explanation, however, isn’t consistent with the history of science. Here’s why the universe appears fine-tuned for life to exist.

Can time go backwards? Or can it only move in the forward, linear direction? One of the fundamental properties of the universe is that it moves from the state of order to the state of disorder or entropy. We can’t reverse this state of affairs which is why it’s highly unlikely that time can ever go backward. Here is why it’s likely impossible to run the clock backwards.

What is the theory of relativity? What phenomena does the theory attempt to explain? How has it revolutionized our understanding of the workings of our universe? Within Einstein’s theory of relativity, there are actually two theories: special theory and general theory. The former applies to all physical phenomena discounting gravity, and the latter explains the gravitational force in relation to the other forces of the universe. Learn about Albert Einstein’s theory of relativity, explained in simple terms.