Astronomy current events question: discovery of Haumea's ring

Astronomy 210L, fall 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!)

Silbia López de Lacalle, "Haumea, the Most Peculiar of Pluto Companions, Has a Ring Around It" (October 11, 2017)
iaa.es/en/news/haumea-most-peculiar-pluto-companions-has-ring-around-it

A ring around the dwarf planet Haumea was discovered when it passed in front of a:
(A) star.
(B) comet.
(C) black hole.
(D) moon.
(E) gravitational wave.

Correct answer: (A)

Student responses
Sections 70178, 70186
(A) : 36 students
(B) : 0 students
(C) : 2 students
(D) : 2 student
(E) : 5 students