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Merch
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FAQ
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Time & Reality
According to physics, what is the arrow of time linked to?
Entropy and the second law of thermodynamics
The expansion of the universe
Quantum spin direction
Earth's rotation
None
What is a light-year a measure of?
Time in galactic rotation
Time taken for light to decay
Distance, not time
Time it takes light to orbit Earth
None
What is time dilation?
Expansion of space causing slower time
The slowing down of time for an object moving near the speed of light
Reversal of time in black holes
A complete stop in time during quantum events
None
What is the “block universe” theory?
The universe is limited to 3 dimensions
All moments in time exist simultaneously
Time loops endlessly with no past or future
The universe blocks time from affecting matter
None
What is the grandfather paradox?
Killing your grandfather in the past prevents your own existence
A paradox involving infinite ancestors
A theory that time has a genetic memory
A logic problem in aging simulations
None
What happens to time at the event horizon of a black hole (from an outside observer’s perspective)?
It speeds up rapidly
It reverses
It loops endlessly
It appears to freeze
None
What philosophical concept claims time is an illusion?
Empiricism
Eternalism
Materialism
Idealism
None
Which concept suggests the future can affect the past?
Tachyon collapse
Retrocausality
Time folding
Event symmetry
None
What does Einstein’s theory of relativity say about time?
Time is the same everywhere in the universe
Time flows backward in strong gravity
Time passes differently depending on speed and gravity
Time is unaffected by motion
None
Which particle is theorized to travel backward in time?
Neutrino
Gluon
Tachyon
Photon
None
Time's up