Gravity News

NO

NO

Before 2036

Before 2038

Before 2034

Before 2032

Before 2030

Before 2028

YES

Before 2031

Before July 2030

Before 2030

Before July 2029

Before 2029

Before July 2028

Before 2028

Before July 2027

NO

The universe obeys the "DeWitt boundary condition" which requires the wavefunctions to vanish at singularities.

(Some) singular solutions are replaced by non-singular bouncing solutions.

(Some) singular solutions are replaced by singular bouncing solutions.

(Some) singularities are resolved by wormholes/topology changes.

Singularities prevented by general relativistic time dilation approaching infinity

Modified gravitational action (as opposed to Einstein-Hilbert action) prevents singular solutions.

Spacetime is fundamentally discrete, and the discrete structure does not contain singularity.

NO

YES

Gravitational path integral of metric field

Gravitational path integral of gauge variables (e.g., spinfoam models)

Causal set

AdS/CFT

Canonical loop quantum gravity

Quantum geometrodynamics

Chinese state or private enterprise

No artificial-gravity station launched by resolution date

US Company and/or NASA

European company or agency

Russian company or Roscosmos

YES