How Have Astronomers Learned What Different Asteroids Are Made Of

question 31

Multiple Choice

How have astronomers learned what different asteroids are made of?

• A) The only way is to send a spacecraft to each asteroid and bring a chunk of it home
• B) They measure the x-rays that all asteroids give off
• C) They wait until the asteroid has a tail of gas behind it and measure that tail
• D) They examine the spectrum of the sunlight that reflects from the asteroid
• E) There is no way at the present time to know what asteroids are made of

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