Astronomy current events question: runaway star bow shocks

Astronomy 210L, spring semester 2016
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!)
Whitney Clavin, "Runaway Stars Leave Infrared Waves in Space" (January 5, 2016)
Massive, runaway stars can be identified from NASA's Spitzer Space Telescope and Wide-field Infrared Survey Explorer images of:
(A) type Ia supernovae.
(B) Doppler shifts.
(C) dark matter filaments.
(D) x-ray fluctuations.
(E) bow shocks.

Correct answer: (E)

Student responses
Sections 30678, 30679, 30680
(A) : 5 students
(B) : 6 students
(C) : 2 students
(D) : 6 students
(E) : 28 students

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