Question:

Possible impact of antimatter on space-time?

Nevaeh: 2 days ago

Is it possible somehow that antimatter (-ve mass) could create an upside curvature on spacetime, as it bulges outward rather than inward as in case of real matter (+ve mass)?

Answer:
Willow: 2 days ago

Antimatter particles have mass and both produce and respond to gravity the same way as their matter counterparts. The "anti" in their name refers not to their mass but to their electrical charge.