Astronomy current events question: Mercury's north pole water ice

Astronomy 210L, fall semester 2017
Cuesta College, San Luis Obispo, CA

Students are assigned to read online articles on current astronomy events, and take a short current events quiz during the first 10 minutes of lab. (This motivates students to show up promptly to lab, as the time cut-off for the quiz is strictly enforced!)
Kevin Stacey, "New Research Suggests Mercury's Poles are Icier than Scientists Thought" (September 19, 2017)
Analysis of reflected laser light from the NASA MESSENGER spacecraft corroborate earlier evidence of large deposits of __________ in craters at Mercury's north pole.
(A) water ice.
(B) rare-earth minerals.
(C) hydrocarbons.
(D) helium-3.
(E) dark matter.

Correct answer: (A)

Student responses
Sections 70178, 70186
(A) : 38 students
(B) : 0 students
(C) : 6 students
(D) : 0 students
(E) : 0 students

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