For How Long Has It Been Known That the Planet

question 312

Multiple Choice

For how long has it been known that the planet Jupiter has moons?

• A) since the first spacecraft flybys by Pioneer I in 1979
• B) since 1948, when the Mount Palomar telescope was completed
• C) since Galileo turned his telescope toward the sky in 1610
• D) since the time of the ancient Greeks

---

Definitions:

British Pounds

The currency of the United Kingdom, also known as sterling.

Currency Exchange

The process of exchanging one form of currency for another, based on current exchange rates.

Euros

The official currency used in 19 of the 27 European Union countries, known as the Eurozone.

Weakens

Describes the decrease in strength or value of an entity, such as currency depreciating in value against others in the foreign exchange market.