- #1
BigBang1234
- 2
- 0
Someone told me that spacetime is a matter. I know that matter must be a mass or energy. Is spacetime a matter (mass or energy) , and if it is a mass. why can't we see it? Is it due to the presence of dark matter? If it is an energy. what is its source? The sun?? If it is not mass or energy, tell me what is it. please help and thanks.