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
C
Physics & Space Science
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Cosmologists cannot begin their history of the big bang at a time of exactly zero because it cannot be explained by current physics
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
You would use the 21-cm radio emission line to map out ____________
a. the interstellar medium b. molecular clouds c. atomic hydrogen clouds d. All of the other choices are correct.
Physics & Space Science
The Higgs field is best described as a field that
Physics & Space Science
The process of losing water from the soil to the air from both the ground and from plants is called
What will be an ideal response?
Physics & Space Science