Astronomy current events question: HR 8799 exoplanets

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!)

Matt Williams, "Four Planet System Directly Imaged in MotionN" (January 28, 2017)
universetoday.com/133087/four-planet-system-directly-imaged-motion/

An animation of four exoplanets orbiting the star HR 8799 was generated by using a computer to:
(A) analyze gravitational waves.
(B) simulate all possible exoplanet orbits.
(C) interpolate individual archived images.
(D) clean up Voyager space probe images.
(E) translate Babylonian star charts.

Correct answer: (C)

Student responses
Sections 30679, 30680
(A) : 2 students
(B) : 18 students
(C) : 8 students
(D) : 3 students
(E) : 0 students