Cosmologists cannot begin their history of the Big Bang at a time of exactly zero because it cannot be explained by current physics.
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Q5: Dark energy accounts for about 70% of
Q6: Olber's paradox is explained by the fact
Q7: When matter and antimatter particles combine, the
Q12: The expansion of the Universe is accelerating.
Q13: All dark matter in our Universe falls
Q14: Normal matter is baryonic.
Q14: Olber's paradox states that the _.
A) Universe
Q15: The observable universe includes everything that exists.
Q17: The cosmological redshifts of galaxies are Doppler
Q18: After nuclear reactions in the Big Bang
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