سوال ۴۹ کنکور ارشد مدیریت کسب‌وکار (MBA) ۱۴۰۱

Passage 2 summary: The passage reports a black hole assisting star formation in Henize 2-10. In paragraph 2 it gives a parenthetical criterion for a dwarf galaxy: its stellar population is no greater than one billion. The surrounding discussion describes Hubble’s observations and the connection to a star-forming region.

Which of the following is defined in first two paragraphs in the passage?