Why Did the Discovery of a 17 Earth Mass Terrestrial

question 77

Multiple Choice

Why did the discovery of a 17 Earth mass terrestrial exoplanet surprise astronomers?

• A) It implies that Earth lost a great deal of mass in the early solar system.
• B) Such a large planetary mass was thought to be gravitationally unstable.
• C) Models had predicted that the formation of such a large rocky core requires a protoplanetary disk many times larger than that of the solar system.
• D) Models had predicted that a rocky protoplanet of such a mass would attract enough hydrogen to form a gas giant.

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Definitions:

Straight-Line Method

A depreciation technique that allocates an equal amount of the cost of an asset minus its salvage value to each accounting period over its useful life.

Interest Cost

Interest cost refers to the total interest that accrues on borrowed funds over the life of a loan or bond, representing the cost of borrowing.

Projected Benefit Obligation

An actuarial measurement of the present value of expected payments for pension benefits owed to employees, based on factors like salary growth and employee turnover.

Accrued/Prepaid Pension Cost

This refers to the accounting treatment of pension expenses that have been incurred but not yet paid (accrued) or paid in advance (prepaid).