matter matters

mass and charge are the basic properties of matter.

just like charges which are of two types(positive and negative) which

have different and opposite properties(i.e. positive charge experience

force in the direction of field but negative charge in opposite

direction), did you ever think of the existance of an antimass which

would have different or opposite properties from that of mass(i.e.

repelling from other masses or which experiences a force whose

direction is opposite to the direction of gravitational field) or that

mass and antimass combine and destroy themselves to form no

mass or zero mass which exists in empty vacuum?