Why Does the Doppler Shift Method of Detecting Extrasolar Planets

question 91

Multiple Choice

Why does the Doppler shift method of detecting extrasolar planets only give us the minimum mass of a planet?

• A) because we don't necessarily know the density of the planet
• B) because we don't necessarily know the angle the planet's orbit makes with our line of sight
• C) because we don't necessarily know the diameter (size) of the planet
• D) because we don't necessarily know the mass of the parent star very

---

Definitions:

Expense

An outflow of cash or other valuable assets from a person or company to another entity in exchange for goods or services.

Expenses

Costs incurred during business operations to generate revenue, which may include rent, salaries, and materials.

Generate Revenues

The process of earning income through the sale of goods or services provided by a business.

Obligations

Obligations are responsibilities or legal commitments that arise from contracts, laws, or financial agreements, requiring entities to settle debts or perform specific actions.