Multiple choice

Who discovered that water vapour was present in Mars?

  1. Carrol

  2. Huggins

  3. Newton

  4. Stamen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

William Huggins, a pioneering astronomer, discovered water vapor in Mars' atmosphere in 1867 using spectroscopy. This was one of the first major discoveries using spectroscopic techniques in planetary astronomy. The other names listed are not associated with this discovery.

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