B How Does Space Expand? Understanding Universe Expansion

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The universe expands as existing matter moves further apart, rather than creating new matter or mass. While it's true that mass can be converted from energy and can also be destroyed, the mechanics of space expansion remain poorly understood. Current theories suggest that the expansion does not involve the creation of new mass. The complexities of this phenomenon lead to ongoing debates among scientists. Ultimately, a definitive explanation of how space expands is still elusive.
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how can the universe be expanding if matter nor mass can be created?
 
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dirty dan said:
how can the universe be expanding if matter nor mass can be created?
Because the expansion doesn't involve creating matter. It's just existing matter getting further apart.

That said, matter/mass can certainly be created or destroyed. Mass is a form of energy, and other forms of energy can be converted to mass under the right conditions. When heavy particles decay or matter and anti-matter meet and are annihilated, mass is also destroyed.
 
The truth, there is no satisfying explanation. They really don't understand the mechanics behind how space expands... :cry:
 

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