Astronomy current events question: bright sub-millimeter galaxies

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!)

Rebecca Raber, "Desika Narayanan Unlocks The Secrets To The Brightest Galaxies in The Universe" (September 24, 2015)
haverford.edu/college-communications/news/desika-narayanan-unlocks-secrets-brightest-galaxies-universe

Based on computer models, bright sub-millimeter galaxies maintain their rapid star formation because they: (A) are extremely young.
(B) are gas-rich.
(C) are about to die.
(D) contain little dark matter.
(E) merge with other galaxies.

Correct answer: (B)

Student responses
Sections 70178, 70186
(A) : 4 students
(B) : 15 students
(C) : 3 students
(D) : 1 student
(E) : 9 students