Can matter exists with out any mass..if not then essentially aren't mass and matter the same.

I know this does not have any straight answer but i would like to discuses about this.

Question

Can matter exists with out any mass..if not then essentially aren't mass and matter the same.

I know this does not have any straight answer but i would like to discuses about this.

anonymous · Answer

one is a measure of the other. mass is a measure of matter

anonymous · Answer

it depends  photons have no mass.... so they can travel at light speed.. while other particles such as quarks are heavy which makes them unable to move at light speed...

anonymous · Answer

mass is the property of matter

anonymous · Answer

neutrinos are matter and they have no mass

anonymous · Answer

many particles have no rest mass but they have inertial mass, ie photons

anonymous · Answer

matter is not relativistic but mass is