Page 622 - 89 history of astronomy_opt
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It was as if it emerged from one part of the
nebula, cooled down, and rushed through
another part of the nebula, rendering the
nebular gas more luminous than itself.[20]
Since 1892 one Nova after another has
shown a spectrum as described above, like
a meteor rushing towards us and leaving a
train behind, for this seems to be the obvi-
ous meaning of the spectra.
622
