OptionProbability
String Theory/M-Theory (replacing point particles with extended objects in higher dimensions)
Other
No opinion
Gravity is not quantum
Hořava–Lifshitz Gravity (breaking speed of light limit at high energies)
Causal Sets (Discrete spacetime atoms, only connected by causal relations)
Causal Dynamical Triangulations (gluing triangulated space in layers of time)
Loop Quantum Gravity (quantizing areas and volumes in spacetime)
Asymptotic Safety (spacetime becomes a fractal on small scales)
23
21
13
12
9
6
5
Systematic errors in supernova data
Early dark energy (i.e., a change in the dark energy between epochs)
Systematic errors in CMB/galaxy-survey data
Modified or quantum gravity
Other new particles or fields
28
18
10
7
A black hole is in reality a "fuzzball," a quantum object that doesn't have an event horizon.
It is crushed into a singularity
It bounces out into our universe
It bounces out into another universe
26
16
11
