The cosmic microwave background radiation comes from the time when neutral hydrogen atoms formed in the process of _______________
Fill in the blank(s) with correct word
recombination
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The WAI guidelines recommend you provide a text equivalent or descriptive tet for every nontext element.
Answer the following statement true (T) or false (F)
The mass of a neutron star cannot exceed about ________ solar masses
A) 1.4 B) 3 C) 8 D) 25 E) 100
Which one of the following is the correct representation of the electromagnetic waves from longer wavelength to shorter wavelength?
A) radio waves, infrared, microwaves, UV, visible, X-rays, gamma rays B) radio waves, UV, X-rays, microwaves, infrared, visible, gamma rays C) radio waves, microwaves, visible, X-rays, infrared, UV, gamma rays D) radio waves, microwaves, infrared, visible, UV, X-rays, gamma rays E) radio waves, infrared, X-rays, microwaves, UV, visible, gamma rays
The Sun fuses _____ hydrogen nuclei to make one helium nucleus
A) two B) three C) four D) five