[Open-bio-announce] Found out by the most delicate ex

[Maine]

 sun, so that the reasoning of astronomers which had argued them to be
suns was proved. [Illustration: THE SPECTRUM OF THE SUN AND SIRIUS.] We
have here in the picture the spectrum of the sun and the spectrum of
Arcturus. You can see that the lines which appear in the band of light
belonging to Sirius are also in the band of light belonging to the sun,
together with many others. This means that the substances flaming out
and sending us light from the far away star are also giving out light
from our own sun, and that the sun and Sirius both contain the same
elements in their compositions. This, indeed, seems enough for the
spectroscope to have accomplished; it has interpreted for us the message
light brings from the stars, so that we know beyond all possibility of
mistake that these glowing, twinkling points of light are brilliant suns
in a state of intense heat, and that in them are burning elements with
which we ourselves are quite familiar. But when the spectroscope had
done that, its work was not finished, for it has not only told us what
the stars are made of, but another thing which we could never have known
without it--namely, i
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