What Proportion of Visible Stars in Our Nighttime Sky Are

question 156

Multiple Choice

What proportion of visible stars in our nighttime sky are members of multiple-star systems,such as binary stars?

• A) less than 1%
• B) 2/3, or almost 70%
• C) only about 1/4, or 25%
• D) close to 100%

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Definitions:

Current Account

A component of a country's balance of payments that measures the trade in goods and services, plus net earnings on investments, and direct transfers.

Capital Account

Part of a country's balance of payments, recording the net change in asset ownership and investments.

Foreign Exchange Markets

Global decentralized or over-the-counter markets for trading currencies, determining the foreign exchange rates.

High Rates of Inflation

A situation where the rate at which the general level of prices for goods and services is rising, and, subsequently, purchasing power is falling, is significantly above the normal rate.