When Astronomers Began Searching for Extrasolar Planets, They Were Surprised

question 47

Multiple Choice

When astronomers began searching for extrasolar planets, they were surprised to discover Jupiter-sized planets much closer than 1 AU from their parent stars. Why is this surprising?

• A) These planets must have formed at larger radii where temperatures were cooler and then migrated inward.
• B) Jupiter-sized, rocky planets were thought to be uncommon in other solar systems.
• C) These planets must be the remnants of failed stars.
• D) Earth-like planets must be rarer than Jupiter-sized planets in other solar systems.
• E) It is different than in our Solar System.

---

Definitions:

Markets

Places or systems where parties engage in exchange of goods, services, or information, often determined by supply and demand.

Annual Report

A comprehensive report on a company's activities throughout the preceding year, intended to give shareholders and other interested parties information about the company's performance and financial health.

Shareholder Letter

A written communication, often included in annual reports, from a company's executive to its shareholders, outlining the firm's performance, challenges, and future prospects.

Stock Exchanges

Centralized platforms where stocks and other securities are bought and sold.