Astronomy current events question: cosmic wind erosion

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!)

Jim Shelton, "Dust Pillars of Destruction Reveal Impact of Cosmic Wind on Galaxy Evolution" (July 27, 2015)
news.yale.edu/2015/07/27/dust-pillars-destruction-reveal-impact-cosmic-wind-galaxy-evolution

Hubble Space Telescope images show __________ eroding gas and dust at the edges of a Coma cluster spiral galaxy.
(A) vacuum energy.
(B) cosmic winds.
(C) a central supermassive black hole.
(D) antimatter.
(E) supernova explosions.

Correct answer: (B)

Student responses
Sections 70178, 70186
(A) : 4 students
(B) : 26 students
(C) : 2 students
(D) : 0 student
(E) : 3 students