Big Bang

Who first proposed the Big Bang theory?

• Vesto Slipher

• Fred Hoyle

• Georges Lemaître

• Edwin Hubble

What is the estimated age of the universe according to detailed measurements of the expansion rate?

• 10 billion years

• 20 billion years

• 15.5 billion years

• 13.787 billion years

What phenomenon is attributed to the observation that the expansion of the universe is accelerating?

• Flatness problem

• Dark energy

• Baryon asymmetry

• Dark matter

What is the name of the relic radiation left over from the early universe?

• Cosmic microwave background

• Neutrino background

• Dark matter radiation

• Gravitational wave

Who coined the term 'Big Bang' during a BBC Radio broadcast in 1949?

• Edwin Hubble

• Fred Hoyle

• Georges Lemaître

• Vesto Slipher

What is the main observational evidence supporting the Big Bang theory?

• Measurement of dark energy

• Discovery of dark matter

• Detection of cosmic microwave background radiation

• Observations of galaxy formation

What is the primary implication of the flatness problem in cosmology?

• The universe is dominated by dark energy

• The universe is spatially flat

• The universe will end in a Big Crunch

• The universe is expanding at an accelerating rate

What is the horizon problem in the context of the Big Bang theory?

• The issue of regions of the universe being in causal contact despite large separations

• The difficulty in detecting dark matter particles in laboratories

• The discrepancy between the measured and predicted values of the Hubble constant

• The challenge of explaining the abundance of primordial elements

What is the ultimate fate of the universe according to the Big Bang model?

• The universe will experience a Big Crunch

• The universe will continue expanding indefinitely

• The universe will be consumed by dark matter

• The universe will reach absolute zero temperature

What is the primary role of inflation theory in addressing cosmological problems?

• To predict the abundance of primordial elements

• To resolve the flatness problem and horizon problem

• To explain the acceleration of the universe's expansion

• To detect dark energy in the universe