Astronomy current events question: dwarf galaxy dark matter

Astronomy 210L, spring semester 2012
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!)

Francis Reddy, "Fermi Observations of Dwarf Galaxies Provide New Insights on Dark Matter," April 2, 2012
http://www.nasa.gov/mission_pages/GLAST/news/dark-matter-insights.html

Analysis of observations of nearby dwarf galaxies by NASA's Fermi gamma-ray space telescope has determined that dark matter:
(A) cannot be the antimatter twin of luminous matter.
(B) comprises more than 50% of the universe's composition.
(C) is created inside supermassive black holes.
(D) is not composed of weakly-interacting massive particles (WIMPs).
(E) may not actually exist.

Correct answer: (D)

Student responses
Sections 30678, 30679, 30680
(A) : 1 student
(B) : 10 students
(C) : 0 students
(D) : 13 students
(E) : 0 students