Astronomy current events question: larger estimate for galaxies in universe

Astronomy 210L, fall semester 2016
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!)
Ray Villard, Mathias Jäger, and Christopher Conselice, "Hubble Reveals Observable Universe Contains 10 Times More Galaxies Than Previously Thought" (October 13, 2016)
Over 90% of galaxies in the universe have yet to be detected, based on __________ of Hubble Space Telescope images.
(A) false-coloring.
(B) lookback times.
(C) 3-D modeling.
(D) dark matter densities.
(E) infrared filtering.

Correct answer: (C)

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

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