3 ms·
If you're thinking of "negative gravity", then particles exhibiting it fall under the "exotic matter" umbrella. We don't know what exotic matter actually is, al
by majewsky 8y ago
If you're thinking of "negative gravity", then particles exhibiting it fall under the "exotic matter" umbrella. We don't know what exotic matter actually is, although its existence is predicted by the current models on the expansion of the universe.
Antimatter still has regular (i.e. positive) mass, so gravity works in the usual (attracting) way.
- zamalek 8y agoThe specific type of exotic matter would be imaginary matter, that is matter with imaginary mass (a complex number) - tachyons. Negative matter, which is also exotic but has a negative real mass, behaves normally under gravity so long as the two bodies are sufficiently different in absolute mass.