Astronomy current events question: S2 shock wave radio waves

Astronomy 210L, fall semester 2015
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!)

Christine Pulliam, "Radio Telescopes Could Spot Stars Hidden in the Galactic Center" (September 22, 2015)
cfa.harvard.edu/news/2015-19

Stars near the center of the Milky Way could be spotted from __________ given off by their stellar winds colliding with surrounding interstellar gases.
(A) gamma rays.
(B) coronal discharges.
(C) antimatter.
(D) gravitational waves.
(E) radio waves.

Correct answer: (E)

Student responses
Sections 70178, 70186
(A) : 3 students
(B) : 3 students
(C) : 0 students
(D) : 4 students
(E) : 22 students