OptionVotes
YES
NO
1923
1018
OptionProbability
Primordial Black Holes
Any WIMPs or Axions not listed in other answers
No Clear Leading Theory
Other
Combination of particle types
Modified Gravity Theories
Matter outside of our 3D space
Second Flavor Hydrogen Atoms
Gravitons
MACHOS
27
22
15
6
5
3
1
5267
1567
