A) 1923
B) 1879
C) 1897
D) 1905

A) Hexagonal
B) Flat
C) Spherical
D) Curved

A) The absence of black holes
B) The existence of gravitational waves
C) The reversal of time
D) The existence of parallel universes

A) Gravitational lensing
B) Reflection diffraction
C) Electromagnetic deflection
D) Optical refraction

A) Two
B) Four
C) Six
D) Three

A) Black hole formation
B) Frame dragging
C) Time dilation
D) Quantum superposition

A) Voltage is equivalent to current
B) Momentum is equivalent to energy
C) Gravity is equivalent to acceleration
D) Charge is equivalent to mass

A) The circumference of the Earth
B) The event horizon of a black hole
C) The curvature of a wormhole
D) The distance between galaxies

A) As the interaction of strong and weak forces
B) As the transfer of particles
C) As the curvature of spacetime
D) As the result of friction