Astronomy current events question: extra-galactic planet

Astronomy 210L, Fall Semester 2010
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!)
Alan MacRobert, "Planet from Another Galaxy," November 18, 2010
Astronomers were able to determine that the star HIP 13044 and its orbiting planet may have come from beyond the Milky Way galaxy by analyzing their:
(A) trajectory.
(B) metallicity.
(C) gravitational wobbles.
(D) orbital motion.
(E) absorption and emission spectra.

Correct answer: (A)

Student responses
Sections 70178, 70186, 70200
(A) : 5 students
(B) : 10 students
(C) : 8 students
(D) : 4 students
(E) : 3 students

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