Incidentally, see that white spot in the oxygen image? That shows you the size of the Earth to the same scale. The structures we see in the Sun are very large!
Hey, what do the letters CDS stand for?
Coronal Diagnostic Spectrometer
This is an instrument (spectrometer) for studying (diagnosing) the Sun’s atmosphere (corona). Maybe it should have been the SDC?!
Different temperature loops of ionised gas as seen by SOHO/CDS