Within the First Second After the Big Bang,the Universe Was

question 7

Multiple Choice

Within the first second after the Big Bang,the universe was filled with high-energy,gamma-ray photons.These photons created huge numbers of elementary particles and their antiparticles through pair production.What happened to these particles?

• A) They are still here. They combined to create the first atoms and molecules that compose the physical universe.
• B) The particles are still with us as atoms and molecules, but almost all of the antiparticles disappeared.
• C) These particle-antiparticle pairs annihilated to produce more photons.
• D) This pair production was followed by the era of cosmic inflation during which these particles spread out to produce the matter densities that we see today.

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Down Syndrome

A genetic disorder caused by the presence of all or part of a third copy of chromosome 21, characterized by physical growth delays and intellectual disability.

Natural Law Position

A theory in ethics and philosophy asserting that moral standards are derived from human nature and the natural world, holding universal applicability.

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Referring to an individual's ability to operate or perform at their maximum potential in physical, mental, or emotional capacities.

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A reference to Immanuel Kant, an 18th-century German philosopher known for his work in ethics and moral philosophy, emphasizing duty, autonomy, and the categorical imperative.