We observe neutral hydrogen gas using
A) X-ray radiation from highly ionized atoms.
B) visible radiation at 656.3 nm from recombined hydrogen.
C) 21-cm emission.
D) microwave emissions.
E) ultraviolet radiation from helium and oxygen.
Correct Answer:
Verified
Q27: What primarily makes it difficult to observe
Q28: The entire process of star formation is
Q29: If you wanted to study regions where
Q30: We detect neutral gas in the interstellar
Q31: Stars forming in molecular clouds tend to
Q33: The figure below shows three pictures of
Q34: For an object in hydrostatic equilibrium, if
Q35: An H II region signals the presence
Q36: Molecular cloud cores are places where you
Q37: Of the following processes at work in
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents