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)?

  • $\begingroup$ My answer here is relevant physics.stackexchange.com/q/352563 $\endgroup$
    – anna v
    Commented May 30, 2020 at 4:23
  • $\begingroup$ physics.stackexchange.com/q/538078/23615 a related question with links/answers therein. $\endgroup$
    – Triatticus
    Commented May 30, 2020 at 4:23
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    $\begingroup$ The answer is no. $\endgroup$
    – SuperCiocia
    Commented May 30, 2020 at 4:50
  • $\begingroup$ Why do you think that antimatter has negative mass? $\endgroup$
    – G. Smith
    Commented May 30, 2020 at 5:07
  • $\begingroup$ @SuperCiocia if you check the link I gave, there is a link to experiments at CERN checking the hypothesis that antimtter might respond to gravity with a negative sign.home.cern/science/experiments/aegis $\endgroup$
    – anna v
    Commented May 30, 2020 at 5:23

1 Answer 1


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.


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