Astronomy current events question: Backyard Worlds crowdsource search

Astronomy 210L, spring semester 2017
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!)

Marc Kuchner, "Backyard Worlds: The Search for Planet 9" (February 15, 2017)
zooniverse.org/projects/marckuchner/backyard-worlds-planet-9/about/research

Volunteers can assist with locating brown dwarfs or a possible "Planet Nine" by identifying __________ in NASA's Wide-field Infrared Survey Explorer (WISE) telescope images.
(A) moving objects.
(B) infrared reflections.
(C) computer glitches.
(D) disrupted orbits.
(E) gravitational waves.

Correct answer: (A)

Student responses
Sections 30679, 30680
(A) : 9 students
(B) : 12 students
(C) : 3 students
(D) : 4 students
(E) : 3 students