Questions with the keyword 'matter'

• What about matter warps the spacetime around it? How do you define matter or what space is? P.S. Are there any stable, by gummybear10 to Emma, Jimmy, Janet, Niall, Simon Comments: (No comments so far )
• Why does matter exert a gravitational force? by salej014 to Emma, Jimmy, Janet, Niall, Simon Comments: (No comments so far )
• Why does matter exert a gravitational force? by umera to Emma, Jimmy, Janet, Niall, Simon Comments: (No comments so far )