Astronomy current events question: NASA Dawn mission at Vesta

Astronomy 210L, spring semester 2012
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!)

Jia-Rui Cook, "Dawn Obtains First Low Altitude Images of Vesta," December 21, 2011
http://www.nasa.gov/mission_pages/dawn/news/dawn20111221.html

NASA's Dawn spacecraft is currently making low-altitude maps of:
(A) Vesta, an asteroid.
(B) Saturn's rings.
(C) Halley's comet.
(D) sunspots and solar flares.
(E) meteorite damage at the International Space Station.

Correct answer: (A)

Student responses
Sections 30678, 30679, 30680
(A) : 36 students
(B) : 9 students
(C) : 1 student
(D) : 15 students
(E) : 2 students