Astronomy current events question: imaging π1 Gruis' surface

Astronomy 210L, spring semester 2018
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!)

LaTina Emerson, "Astronomers Create First Detailed Images of Surface of Giant Star" (January 22, 2018)
news.gsu.edu/2018/01/22/astronomers-produce-first-detailed-images-surface-giant-star/

The __________ of giant star π¹ Gruis was imaged using interferometry, where light was simultaneously combined from several different telescopes.
(A) solar flares.
(B) surface granules.
(C) dark matter fringe.
(D) gravitational waves.
(E) white dwarf companion.

Correct answer: (B)

Student responses
Sections 30679, 30680
(A) : 9 students
(B) : 27 students
(C) : 0 students
(D) : 2 students
(E) : 1 student