Current state of play in modern physics for the dim

AI Thread Summary
Modern physics has advanced significantly, introducing concepts like string theory and the existence of dark matter and energy, which account for most of the universe's mass and energy. The quest for a complete understanding of the universe remains ongoing, with questions about the nature of particles, gravity, and dimensions still prevalent. There is interest in calculations that relate mass and energy to dimensions as proposed by string theory. The discussion highlights the need for accessible resources for non-technical individuals to grasp these complex topics. Recommended starting points include the FAQ section on cosmology within the forum.
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Not really sure I have the right forum for this but here goes. This is for self education and nothing more.

When I left school (25 years ago) I thought I understood physics. Since that time physics seems to have exploded. Particles have got smaller, string theory has appeared in the public eye, dimensions seem to be popping up everywhere. Most of the mass and energy in the universe has disappeared. ie. dark matter and energy.

Are we as a species anywhere close to getting the complete solution ?

Is there a calculation that will take the current mass/energy thought to be present in the universe and divide it up into the current number of dimensions according to string theory, super string theory etc. What are stings ? Are there more particles to be discovered ? Is gravity weaker than it should be ? If so, do we know why ?

What should I read to start to get an over view for a non technical Joe.

Thanks.
 
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The FAQ section on this forum in cosmology is a good place to start.
 

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