The Instrument Astronomers Are Now Using to Make the Most

question 23

Multiple Choice

The instrument astronomers are now using to make the most precise measurements of stellar parallax we have ever had is

• A) the 5-meter (Hale) reflector on Mt. Palomar
• B) the Very Large Array of radio telescopes
• C) the Compton Gamma Ray Observatory
• D) the Gaia satellite in space
• E) a swimming-pool sized vat of cleaning fluid deep in the shaft of a gold mine

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A thought process or method used to generate creative ideas by exploring many possible solutions.

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