A__________is a stellar object with such low mass that it cannot raise its central temperature high enough to sustain hydrogen fusion.
A) T Tauri star
B) Herbig-Haro object
C) brown dwarf
D) protostar
Question 2
A__________is a small, dark cloud only about 1 ly in diameter that contains 10 to 1000 solar masses of gas and dust, thought to be related to star formation.
A) Herbig-Haro object
B) brown dwarf
C) Bok globule
D) T Tauri star