Astronomy current events question: Fermi space telescope gamma rays

Astronomy 210L, Fall Semester 2009
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!)

Ivan Semeniuk, "Is Fermi Seeing Dark Matter?," October 28, 2009
http://www.skyandtelescope.com/community/skyblog/semeniuk/66968132.html

According to Harvard researchers, gamma rays detected by the space-based Fermi Large Area Telescope may indicate the presence of:
(A) dark energy.
(B) dark matter.
(C) Nibiru, a planetoid supposedly colliding with Earth in 2012.
(D) a new supermassive black hole near the Milky Way center.
(E) technological sources of nuclear energy being released.

Correct answer: (B)

Student responses
Sections 70178, 70200
(A) : 2 students
(B) : 34 students
(C) : 1 student
(D) : 2 students
(E) : 4 students