The Expansion of the Universe Seems to Be Accelerating

question 21

Multiple Choice

The expansion of the universe seems to be accelerating. The evidence for this is based on observations of

• A) the cosmic background radiation.
• B) gas clouds orbiting the centers of galaxies.
• C) the slowing down in the pulsation rate of distant neutron stars.
• D) the redshift in the light from the explosions of distant supernovas.
• E) the manner in which the stars are distributed in our own galaxy.

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Definitions:

Public Acts

Laws or legislative decisions that are passed by government and apply to the public as a whole.

Preemptive Power

The authority to act before others to prevent an undesirable outcome, often used in legal or military contexts to describe preemptive measures or actions.

Necessary

Something essential or required for a particular purpose or outcome, often in the context of achieving goals or fulfilling conditions.

Proper Clause

The clause in the U.S. Constitution granting Congress the power to make all laws which shall be necessary and proper for carrying into execution its powers.