Do you think Darwin is right

[JaggedSac]

tombi123 said:

mrstickball said:

akuma587 said:

Mind telling me then, if BB is true, how the matter compressed itself into a singularity? Or how it was even there in the first place? The root of the issue with BB is that no matter how easy it is to say that it happened based on the universe expanding, it fails to answer the root of the problem: How the matter became a singularity, and how it naturally decided to react with an explosion to expand the singularity into the universe we have today.

 

 

 One theoretically possible explaination for the origin of matter is from a vacuum fluctuation. It is common knowledge in the physics community that particles and anti-particles get created out of nothing, exist for a certain time and then collide and destroy each other in a flash of light (emitting a photon). This happens billions of times every second. As long as they obey this formula: E * T = h (where E is energy, T is time and h is Planck's constant) creating particles out of nothing is allowed.

To extend this to the origin of the universe, you could say that as long as the net energy in the universe is close to zero, then the universe can be created out of nothing for a very long time. The positive energy is what causes the universe to expand and the negative energy is what causes the universe to contract (gravity). If the value of the density of the universe is at the critical density, then the net energy is zero and the universe can exist for an infinite amount of time. If it is very close to the critical density then the universe can exists for a very long time but will eventually contract in on itself or tear itself apart. 

I think the general consensus now a days is that the universe will continually expand until entropy effectively wipes out all matter.  The contraction theory is a good way to explain the singularity though.