4 ms·

I think the "falling up" argument comes from the conception that antimatter is the time-reverse of matter.

• delinka 15y ago
  Or perhaps must be affected by antigravity the way matter is by gravity. Assuming antigravity exists. Whether that's correct at all I don't know, but that's the logic being used.
• machrider 15y ago
  Of course, regular old hydrogen "falls up", being lighter than air. :) I guess if gravity is truly reversed for antihydrogen, it would fall up even faster. But I highly doubt it's actually gravitationally repulsive.
  • smosher 15y ago
    The simple solution is to let it fall in a vacuum, which seems to be what they're doing in this case.