Astronomy current events question: warm dust radio wave glow from "Cosmic Yeti" galaxy

Astronomy 210L, fall semester 2019
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!)

News release, "Cosmic Yeti from the Dawn of the Universe Found Lurking in Dust" (October 22, 2019)
uanews.arizona.edu/story/cosmic-yeti-dawn-universe-found-lurking-dust

The Atacama Large Millimeter Array in Chile detected radio waves given off by __________ surrounding rapidly forming stars in a massive monster galaxy when the universe was very new.
(A) warm dust.
(B) dark matter.
(C) gravitational waves.
(D) hydrogen-rich clouds.
(E) matter and antimatter.

Correct answer: (A)

Student responses
Sections 70178, 70186
(A) : 25 students
(B) : 2 students
(C) : 1 student
(D) : 9 students
(E) : 1 student