dirty dan
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how can the universe be expanding if matter nor mass can be created?
How Does Space Expand? Understanding Universe Expansion
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Because the expansion doesn't involve creating matter. It's just existing matter getting further apart.dirty dan said:
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.
Fervent Freyja
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The truth, there is no satisfying explanation. They really don't understand the mechanics behind how space expands... 