When We Determine the Age of the Universe Using the Hubble

question 25

Multiple Choice

When we determine the age of the universe using the Hubble Time, what important simplifying assumption goes into our calculations?

• A) that the expansion of the universe has been happening at the same rate - neither speeding up or slowing down
• B) that all the galaxies are moving away from us at exactly the same speed, no matter how far away they are
• C) that the cosmological principle doesn't hold: the universe is not isotropic and homogeneous
• D) that we have accounted correctly for the effects of dark energy
• E) that the universe is actually contracting instead of expanding

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Profit

The financial gain obtained when revenues exceed the costs associated with business operations or investments.

Heart

That which is vital; the center or core of a person or thing. Expressing one’s innermost thoughts and feelings is termed “speaking from the heart,” and it is the basis of credibility and trust.

Emotional Intelligence

The capacity to be aware of, control, and express one's emotions, and to handle interpersonal relationships judiciously and empathetically.

Collaboration

Working together with one or more people to achieve a common goal, often involving sharing knowledge, learning, and building consensus.